Year	Percent
1950	13.29456
1955	13.46897
1960	13.61744
1965	13.71589
1970	13.76697
1975	13.89189
1980	14.02688
1985	14.14811
1990	13.96928
1995	13.1409
2000	12.70288
2005	12.55909
2010	12.65967
2015	13.10089
2020	13.47789
2025	13.87237
2030	14.61275
2035	15.6252
2040	16.80137
2045	17.92853
2050	18.92235
2055	19.80623
2060	20.65105
2065	21.52229
2070	22.29953
2075	22.9639
2080	23.49561
2085	23.94656
2090	24.3628
2095	24.75546
2100	25.09288