Year	Percent
1950	10.12824
1955	9.9307
1960	9.59707
1965	9.7303
1970	10.31189
1975	10.59502
1980	10.94341
1985	10.96514
1990	10.62911
1995	10.67451
2000	10.16802
2005	10.08535
2010	9.50882
2015	8.61096
2020	8.20715
2025	7.96493
2030	7.85691
2035	7.43594
2040	6.9936
2045	6.58921
2050	6.26602
2055	6.02257
2060	5.8269
2065	5.63139
2070	5.43384
2075	5.26218
2080	5.13007
2085	5.0328
2090	4.95851
2095	4.89343
2100	4.83075