Year	Percent
1950	14.36146
1955	14.32735
1960	14.29593
1965	14.10481
1970	13.71888
1975	13.20797
1980	12.75496
1985	12.44835
1990	12.24809
1995	12.14053
2000	12.20586
2005	12.35791
2010	12.72365
2015	13.48194
2020	14.50646
2025	15.519
2030	16.35314
2035	16.81009
2040	17.21227
2045	17.97632
2050	18.99601
2055	20.05606
2060	20.93531
2065	21.50308
2070	21.94159
2075	22.44154
2080	23.00459
2085	23.54854
2090	23.99772
2095	24.37081
2100	24.6918