Year	Percent
1950	10.25149
1955	10.28616
1960	10.08589
1965	10.50519
1970	10.92471
1975	11.32015
1980	11.50024
1985	11.45159
1990	11.81033
1995	12.07669
2000	12.12019
2005	12.01988
2010	12.3411
2015	13.14899
2020	12.98534
2025	12.27126
2030	11.36018
2035	11.25868
2040	11.16705
2045	10.78693
2050	10.17003
2055	9.54037
2060	9.0496
2065	8.65113
2070	8.29456
2075	7.92093
2080	7.54259
2085	7.17817
2090	6.8613
2095	6.60641
2100	6.38488