Year	Percent
1950	26.50318
1955	27.26748
1960	26.70071
1965	25.95989
1970	24.48391
1975	23.22486
1980	22.96093
1985	22.52023
1990	23.66244
1995	24.3482
2000	25.41049
2005	26.80796
2010	26.82014
2015	26.77868
2020	26.20057
2025	25.39123
2030	24.91139
2035	24.86624
2040	24.56926
2045	23.70836
2050	23.24908
2055	23.19391
2060	23.51198
2065	23.97564
2070	23.7484
2075	23.28315
2080	22.8928
2085	22.70682
2090	22.72251
2095	22.75693
2100	22.63175