Year	Percent
1950	11.69505
1955	11.77836
1960	12.09221
1965	12.15841
1970	12.78206
1975	13.57719
1980	13.91809
1985	14.23898
1990	16.54672
1995	16.63997
2000	17.47641
2005	18.89552
2010	20.6639
2015	21.59278
2020	23.75088
2025	26.65358
2030	29.37882
2035	30.7936
2040	31.67811
2045	32.84636
2050	33.64351
2055	34.04437
2060	34.00344
2065	33.84172
2070	33.86673
2075	34.18299
2080	34.70512
2085	35.22785
2090	35.71995
2095	36.18143
2100	36.65737