[
  {
    "decade": 1840,
    "n": 6,
    "mean_med_inctot_rank": 94.39,
    "mean_global_med_inctot_rank": 98.7,
    "mean_educ_rank": 94.49
  },
  {
    "decade": 1850,
    "n": 22,
    "mean_med_inctot_rank": 90.38,
    "mean_global_med_inctot_rank": 93.16,
    "mean_educ_rank": 92.37
  },
  {
    "decade": 1860,
    "n": 18,
    "mean_med_inctot_rank": 95.81,
    "mean_global_med_inctot_rank": 98.01,
    "mean_educ_rank": 96.94
  },
  {
    "decade": 1870,
    "n": 29,
    "mean_med_inctot_rank": 88.42,
    "mean_global_med_inctot_rank": 95.79,
    "mean_educ_rank": 90.52
  },
  {
    "decade": 1880,
    "n": 31,
    "mean_med_inctot_rank": 89.68,
    "mean_global_med_inctot_rank": 96.78,
    "mean_educ_rank": 91.34
  },
  {
    "decade": 1890,
    "n": 37,
    "mean_med_inctot_rank": 91.11,
    "mean_global_med_inctot_rank": 95.87,
    "mean_educ_rank": 93.67
  },
  {
    "decade": 1900,
    "n": 75,
    "mean_med_inctot_rank": 90.82,
    "mean_global_med_inctot_rank": 94.38,
    "mean_educ_rank": 91.88
  },
  {
    "decade": 1910,
    "n": 70,
    "mean_med_inctot_rank": 90.27,
    "mean_global_med_inctot_rank": 94.2,
    "mean_educ_rank": 92.35
  },
  {
    "decade": 1920,
    "n": 102,
    "mean_med_inctot_rank": 87.52,
    "mean_global_med_inctot_rank": 95.08,
    "mean_educ_rank": 88.45
  },
  {
    "decade": 1930,
    "n": 99,
    "mean_med_inctot_rank": 83.89,
    "mean_global_med_inctot_rank": 93.77,
    "mean_educ_rank": 87.99
  },
  {
    "decade": 1940,
    "n": 108,
    "mean_med_inctot_rank": 82.28,
    "mean_global_med_inctot_rank": 92.87,
    "mean_educ_rank": 84.82
  },
  {
    "decade": 1950,
    "n": 70,
    "mean_med_inctot_rank": 84.47,
    "mean_global_med_inctot_rank": 93.99,
    "mean_educ_rank": 86.98
  },
  {
    "decade": 1960,
    "n": 35,
    "mean_med_inctot_rank": 85.27,
    "mean_global_med_inctot_rank": 92.56,
    "mean_educ_rank": 84.98
  },
  {
    "decade": 1970,
    "n": 11,
    "mean_med_inctot_rank": 89.46,
    "mean_global_med_inctot_rank": 94.74,
    "mean_educ_rank": 90.59
  }
]