text: # From Credit Suisse Global Investment Returns Yearbook 2012
  # 2012 was the last year they published standard deviation :(
  # All numbers are 1900-2012
  # Tuple is (real_returns, nominal_returns, standard_deviation)
  australia = {
      'equities' : (7.2, 11.3, 18.2),
      'bonds' : (1.6, 5.5, 13.2),
      'bills' : (0.7, 4.6, 5.4)
  }
  belgium = {
      'equities' : (2.4, 7.8, 23.6),
      'bonds' : (-0.1, 5.2, 11.9),
      'bills' : (-0.4, 4.9, 8.0)
  }
  canada = {
      'equities' : (5.7, 8.9, 17.2),
      'bonds' : (2.2, 5.3, 10.4),
      'bills' : (1.6, 4.6, 4.9)
  }
  denmark = {
      'equities' : (4.9, 8.9, 20.9),
      'bonds' : (3.2, 7.2, 11.7),
      'bills' : (2.2, 6.2, 6.0)
  }
  finland = {
      'equities' : (5.0, 12.6, 30.4),
      'bonds' : (-0.2, 7.1, 13.6),
      'bills' : (-0.5, 6.7, 11.8)
  }
  france = {
      'equities' : (2.9, 10.2, 23.5),
      'bonds' : (-0.1, 7.1, 13.0),
      'bills' : (-2.8, 4.1, 9.5)
  }
  germany = {
      'equities' : (2.9, 8.1, 32.2),
      'bonds' : (-1.8, 2.9, 15.6),
      'bills' : (-2.4, 2.2, 13.3)
  }
  ireland = {
      'equities' : (3.7, 8.1, 23.1),
      'bonds' : (0.9, 5.2, 14.8),
      'bills' : (0.7, 4.9, 6.6)
  }
  italy = {
      'equities' : (1.7, 10.2, 29.0),
      'bonds' : (-1.7, 6.5, 14.0),
      'bills' : (-3.6, 4.5, 11.5)
  }
  japan = {
      'equities' : (3.6, 10.8, 29.8),
      'bonds' : (-1.1, 5.8, 20.0),
      'bills' : (-1.9, 4.9, 13.9)
  }
  netherlands = {
      'equities' : (4.8, 7.9, 21.8),
      'bonds' : (1.5, 4.5, 9.4),
      'bills' : (0.7, 3.6, 4.9)
  }
  new_zealand = {
      'equities' : (5.8, 9.7, 19.7),
      'bonds' : (2.1, 5.9, 9.1),
      'bills' : (1.7, 5.5, 4.7)
  }
  norway = {
      'equities' : (4.1, 7.9, 27.3),
      'bonds' : (1.8, 5.6, 12.2),
      'bills' : (1.2, 4.9, 7.1)
  }
  south_africa = {
      'equities' : (7.2, 12.5, 22.5),
      'bonds' : (1.8, 6.8, 10.3),
      'bills' : (1.0, 6.0, 6.2)
  }
  spain = {
      'equities' : (3.4, 9.4, 22.2),
      'bonds' : (1.3, 7.2, 11.7),
      'bills' : (0.3, 6.1, 5.8)
  }
  sweden = {
      'equities' : (6.1, 9.9, 22.9),
      'bonds' : (2.6, 6.2, 12.4),
      'bills' : (1.8, 5.5, 6.8)
  }
  switzerland = {
      'equities' : (4.1, 6.5, 19.7),
      'bonds' : (2.2, 4.5, 9.3),
      'bills' : (0.8, 3.1, 5.0)
  }
  uk = {
      'equities' : (5.2, 9.4, 19.9),
      'bonds' : (1.5, 5.5, 13.8),
      'bills' : (1.0, 5.0, 6.4)
  }
  us = {
      'equities' : (6.2, 9.3, 20.2),
      'bonds' : (2.0, 5.0, 10.3),
      'bills' : (0.9, 3.9, 4.7)
  }
  world = {
      'equities' : (5.4, 8.5, 17.7),
      'bonds' : (1.7, 4.8, 10.4),
      'bills' : (0.9, 3.9, 4.7)
  }
  ex_us = {
      'equities' : (4.8, 8.0, 20.4),
      'bonds' : (1.3, 4.3, 14.2),
      'bills' : (0.9, 3.9, 4.7)
  }
  europe = {
      'equities' : (4.6, 7.7, 21.5),
      'bonds' : (0.9, 3.9, 15.3),
      'bills' : (0.9, 3.9, 4.7)
  }
  