Year	Percent
1950	9.56055
1955	9.38619
1960	10.12265
1965	9.90331
1970	10.81114
1975	10.60976
1980	10.44899
1985	10.39901
1990	10.50209
1995	10.78615
2000	10.72955
2005	10.41454
2010	10.21672
2015	10.08663
2020	9.67681
2025	9.1658
2030	8.65821
2035	8.43998
2040	8.17358
2045	7.87119
2050	7.54008
2055	7.22199
2060	6.92792
2065	6.67132
2070	6.43806
2075	6.22651
2080	6.02712
2085	5.84863
2090	5.68828
2095	5.55528
2100	5.43966