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    "year": 1990,
    "ss_billions": 244.1,
    "pi_billions": 4897.3,
    "ss_share_pct": 4.99,
    "index_ss": 100,
    "index_pi": 100,
    "index_wages": 100,
    "index_medicare": 100,
    "ss_per_capita": 978
  },
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    "year": 1991,
    "ss_billions": 264.2,
    "pi_billions": 5072.3,
    "ss_share_pct": 5.21,
    "index_ss": 108.2,
    "index_pi": 103.6,
    "index_wages": 102.6,
    "index_medicare": 109.2,
    "ss_per_capita": 1044
  },
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    "year": 1992,
    "ss_billions": 281.8,
    "pi_billions": 5406.5,
    "ss_share_pct": 5.21,
    "index_ss": 115.4,
    "index_pi": 110.4,
    "index_wages": 108.3,
    "index_medicare": 123.2,
    "ss_per_capita": 1098
  },
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    "year": 1993,
    "ss_billions": 297.9,
    "pi_billions": 5643.6,
    "ss_share_pct": 5.28,
    "index_ss": 122,
    "index_pi": 115.2,
    "index_wages": 112.6,
    "index_medicare": 136.4,
    "ss_per_capita": 1146
  },
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    "year": 1994,
    "ss_billions": 312.2,
    "pi_billions": 5933.9,
    "ss_share_pct": 5.26,
    "index_ss": 127.9,
    "index_pi": 121.2,
    "index_wages": 118.4,
    "index_medicare": 152.8,
    "ss_per_capita": 1186
  },
  {
    "year": 1995,
    "ss_billions": 327.7,
    "pi_billions": 6278.1,
    "ss_share_pct": 5.22,
    "index_ss": 134.2,
    "index_pi": 128.2,
    "index_wages": 125.1,
    "index_medicare": 168.4,
    "ss_per_capita": 1231
  },
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    "year": 1996,
    "ss_billions": 342,
    "pi_billions": 6660.9,
    "ss_share_pct": 5.13,
    "index_ss": 140.1,
    "index_pi": 136,
    "index_wages": 132.3,
    "index_medicare": 181,
    "ss_per_capita": 1270
  },
  {
    "year": 1997,
    "ss_billions": 356.6,
    "pi_billions": 7068.4,
    "ss_share_pct": 5.04,
    "index_ss": 146.1,
    "index_pi": 144.3,
    "index_wages": 141.9,
    "index_medicare": 192.2,
    "ss_per_capita": 1308
  },
  {
    "year": 1998,
    "ss_billions": 369.2,
    "pi_billions": 7584,
    "ss_share_pct": 4.87,
    "index_ss": 151.2,
    "index_pi": 154.9,
    "index_wages": 153,
    "index_medicare": 191,
    "ss_per_capita": 1338
  },
  {
    "year": 1999,
    "ss_billions": 379.9,
    "pi_billions": 7978.4,
    "ss_share_pct": 4.76,
    "index_ss": 155.6,
    "index_pi": 162.9,
    "index_wages": 163.3,
    "index_medicare": 193.9,
    "ss_per_capita": 1361
  },
  {
    "year": 2000,
    "ss_billions": 401.4,
    "pi_billions": 8620.2,
    "ss_share_pct": 4.66,
    "index_ss": 164.4,
    "index_pi": 176,
    "index_wages": 176.7,
    "index_medicare": 203.6,
    "ss_per_capita": 1423
  },
  {
    "year": 2001,
    "ss_billions": 425.1,
    "pi_billions": 8990.1,
    "ss_share_pct": 4.73,
    "index_ss": 174.1,
    "index_pi": 183.6,
    "index_wages": 181.3,
    "index_medicare": 225.4,
    "ss_per_capita": 1492
  },
  {
    "year": 2002,
    "ss_billions": 446.9,
    "pi_billions": 9146.7,
    "ss_share_pct": 4.89,
    "index_ss": 183.1,
    "index_pi": 186.8,
    "index_wages": 182.9,
    "index_medicare": 241.3,
    "ss_per_capita": 1554
  },
  {
    "year": 2003,
    "ss_billions": 463.5,
    "pi_billions": 9474.7,
    "ss_share_pct": 4.89,
    "index_ss": 189.9,
    "index_pi": 193.5,
    "index_wages": 188.1,
    "index_medicare": 257.1,
    "ss_per_capita": 1598
  },
  {
    "year": 2004,
    "ss_billions": 485.5,
    "pi_billions": 10008.9,
    "ss_share_pct": 4.85,
    "index_ss": 198.9,
    "index_pi": 204.4,
    "index_wages": 198.4,
    "index_medicare": 282.8,
    "ss_per_capita": 1658
  },
  {
    "year": 2005,
    "ss_billions": 512.7,
    "pi_billions": 10540.8,
    "ss_share_pct": 4.86,
    "index_ss": 210,
    "index_pi": 215.2,
    "index_wages": 208.4,
    "index_medicare": 308.6,
    "ss_per_capita": 1735
  },
  {
    "year": 2006,
    "ss_billions": 544.1,
    "pi_billions": 11291.4,
    "ss_share_pct": 4.82,
    "index_ss": 222.9,
    "index_pi": 230.6,
    "index_wages": 221.7,
    "index_medicare": 370.8,
    "ss_per_capita": 1824
  },
  {
    "year": 2007,
    "ss_billions": 575.7,
    "pi_billions": 11925,
    "ss_share_pct": 4.83,
    "index_ss": 235.8,
    "index_pi": 243.5,
    "index_wages": 234.2,
    "index_medicare": 397.8,
    "ss_per_capita": 1911
  },
  {
    "year": 2008,
    "ss_billions": 605.5,
    "pi_billions": 12423.4,
    "ss_share_pct": 4.87,
    "index_ss": 248,
    "index_pi": 253.7,
    "index_wages": 239.2,
    "index_medicare": 428.9,
    "ss_per_capita": 1991
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  {
    "year": 2009,
    "ss_billions": 664.5,
    "pi_billions": 12058.3,
    "ss_share_pct": 5.51,
    "index_ss": 272.2,
    "index_pi": 246.2,
    "index_wages": 228.6,
    "index_medicare": 458,
    "ss_per_capita": 2166
  },
  {
    "year": 2010,
    "ss_billions": 690.2,
    "pi_billions": 12547.5,
    "ss_share_pct": 5.5,
    "index_ss": 282.7,
    "index_pi": 256.2,
    "index_wages": 233.1,
    "index_medicare": 477,
    "ss_per_capita": 2231
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  {
    "year": 2011,
    "ss_billions": 713.3,
    "pi_billions": 13299.8,
    "ss_share_pct": 5.36,
    "index_ss": 292.2,
    "index_pi": 271.6,
    "index_wages": 242.3,
    "index_medicare": 497.6,
    "ss_per_capita": 2287
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  {
    "year": 2012,
    "ss_billions": 762.1,
    "pi_billions": 13905.7,
    "ss_share_pct": 5.48,
    "index_ss": 312.2,
    "index_pi": 283.9,
    "index_wages": 253.4,
    "index_medicare": 515.4,
    "ss_per_capita": 2425
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  {
    "year": 2013,
    "ss_billions": 799,
    "pi_billions": 14063.3,
    "ss_share_pct": 5.68,
    "index_ss": 327.3,
    "index_pi": 287.2,
    "index_wages": 260.3,
    "index_medicare": 532.2,
    "ss_per_capita": 2523
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  {
    "year": 2014,
    "ss_billions": 834.6,
    "pi_billions": 14778.2,
    "ss_share_pct": 5.65,
    "index_ss": 341.9,
    "index_pi": 301.8,
    "index_wages": 273.6,
    "index_medicare": 557.4,
    "ss_per_capita": 2614
  },
  {
    "year": 2015,
    "ss_billions": 871.8,
    "pi_billions": 15467.1,
    "ss_share_pct": 5.64,
    "index_ss": 357.1,
    "index_pi": 315.8,
    "index_wages": 287.6,
    "index_medicare": 589.9,
    "ss_per_capita": 2709
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  {
    "year": 2016,
    "ss_billions": 896.5,
    "pi_billions": 15884.7,
    "ss_share_pct": 5.64,
    "index_ss": 367.2,
    "index_pi": 324.4,
    "index_wages": 296.2,
    "index_medicare": 615.1,
    "ss_per_capita": 2764
  },
  {
    "year": 2017,
    "ss_billions": 926.1,
    "pi_billions": 16659,
    "ss_share_pct": 5.56,
    "index_ss": 379.3,
    "index_pi": 340.2,
    "index_wages": 310.3,
    "index_medicare": 642.7,
    "ss_per_capita": 2835
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  {
    "year": 2018,
    "ss_billions": 972.4,
    "pi_billions": 17514.4,
    "ss_share_pct": 5.55,
    "index_ss": 398.3,
    "index_pi": 357.6,
    "index_wages": 325.6,
    "index_medicare": 681.5,
    "ss_per_capita": 2960
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  {
    "year": 2019,
    "ss_billions": 1030.7,
    "pi_billions": 18349.6,
    "ss_share_pct": 5.62,
    "index_ss": 422.2,
    "index_pi": 374.7,
    "index_wages": 341.2,
    "index_medicare": 734.4,
    "ss_per_capita": 3121
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  {
    "year": 2020,
    "ss_billions": 1077.9,
    "pi_billions": 19613.1,
    "ss_share_pct": 5.5,
    "index_ss": 441.5,
    "index_pi": 400.5,
    "index_wages": 346.1,
    "index_medicare": 768.7,
    "ss_per_capita": 3251
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  {
    "year": 2021,
    "ss_billions": 1114.6,
    "pi_billions": 21492.8,
    "ss_share_pct": 5.19,
    "index_ss": 456.6,
    "index_pi": 438.9,
    "index_wages": 377.4,
    "index_medicare": 824.4,
    "ss_per_capita": 3356
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  {
    "year": 2022,
    "ss_billions": 1211.5,
    "pi_billions": 22149.3,
    "ss_share_pct": 5.47,
    "index_ss": 496.2,
    "index_pi": 452.3,
    "index_wages": 407.2,
    "index_medicare": 876.8,
    "ss_per_capita": 3627
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  {
    "year": 2023,
    "ss_billions": 1357,
    "pi_billions": 23637.1,
    "ss_share_pct": 5.74,
    "index_ss": 555.8,
    "index_pi": 482.7,
    "index_wages": 429.7,
    "index_medicare": 953.1,
    "ss_per_capita": 4030
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  {
    "year": 2024,
    "ss_billions": 1448,
    "pi_billions": 25035.8,
    "ss_share_pct": 5.78,
    "index_ss": 593.1,
    "index_pi": 511.2,
    "index_wages": 454.4,
    "index_medicare": 1031.4,
    "ss_per_capita": 4259
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  {
    "year": 2025,
    "ss_billions": 1570,
    "pi_billions": 26327,
    "ss_share_pct": 5.96,
    "index_ss": 643.1,
    "index_pi": 537.6,
    "index_wages": 475.1,
    "index_medicare": 1114.5,
    "ss_per_capita": 4593
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]