Year	Percent
1950	9.59964
1955	10.9384
1960	9.6764
1965	10.97946
1970	11.91539
1975	12.90973
1980	13.43277
1985	12.82237
1990	11.53314
1995	11.25314
2000	10.59965
2005	9.77311
2010	9.63803
2015	8.9686
2020	8.07885
2025	7.85834
2030	7.29914
2035	6.9072
2040	6.50882
2045	6.15357
2050	5.90228
2055	5.75037
2060	5.61389
2065	5.46744
2070	5.31761
2075	5.16498
2080	5.06732
2085	4.99375
2090	4.94274
2095	4.884
2100	4.81546