Year	Percent
1950	13.62697
1955	13.33092
1960	13.18303
1965	12.99523
1970	12.73104
1975	12.46556
1980	12.2193
1985	12.06617
1990	12.09562
1995	12.54779
2000	12.8007
2005	13.13643
2010	13.7224
2015	14.18793
2020	14.76062
2025	15.30307
2030	15.71693
2035	16.51013
2040	17.56723
2045	18.74379
2050	19.8925
2055	20.66964
2060	21.17255
2065	21.57121
2070	22.02313
2075	22.54004
2080	23.02091
2085	23.38755
2090	23.62312
2095	23.78938
2100	23.95433