Year	Percent
1950	10.1333
1955	10.84892
1960	10.98382
1965	12.0671
1970	11.44034
1975	11.17981
1980	11.46737
1985	12.0402
1990	12.60057
1995	13.30793
2000	13.32507
2005	13.05245
2010	12.41189
2015	12.01276
2020	12.16635
2025	12.19388
2030	11.77682
2035	11.24005
2040	10.7243
2045	10.37317
2050	10.11413
2055	9.84325
2060	9.54353
2065	9.19671
2070	8.87232
2075	8.60615
2080	8.3642
2085	8.13812
2090	7.87994
2095	7.6145
2100	7.35767