Year	Percent
1950	16.22598
1955	14.92789
1960	15.22968
1965	15.3614
1970	15.47417
1975	15.34332
1980	14.99298
1985	15.20323
1990	15.46881
1995	15.03673
2000	15.21798
2005	15.88964
2010	16.28816
2015	16.44849
2020	16.32938
2025	16.14575
2030	15.96552
2035	15.69613
2040	15.32869
2045	14.88077
2050	14.35994
2055	13.78472
2060	13.18436
2065	12.57464
2070	11.96815
2075	11.35054
2080	10.801
2085	10.24205
2090	9.73929
2095	9.26984
2100	8.82734