Year	Percent
1950	10.93745
1955	10.79227
1960	12.64203
1965	12.49874
1970	12.356
1975	13.30602
1980	11.59268
1985	12.55127
1990	14.78097
1995	13.74945
2000	12.92463
2005	12.83848
2010	12.53638
2015	12.37471
2020	12.20312
2025	11.99623
2030	11.73993
2035	11.34892
2040	10.80843
2045	10.26815
2050	9.81188
2055	9.35015
2060	8.90813
2065	8.48537
2070	8.07467
2075	7.70474
2080	7.35337
2085	7.04827
2090	6.76464
2095	6.5064
2100	6.27066