Year	Percent
1950	10.69757
1955	10.39194
1960	11.65688
1965	12.62775
1970	14.40773
1975	15.14722
1980	13.78891
1985	11.63405
1990	9.5663
1995	10.31767
2000	10.18332
2005	10.09167
2010	9.63785
2015	8.93064
2020	8.51611
2025	8.28867
2030	7.91548
2035	7.55602
2040	7.21417
2045	6.89154
2050	6.61105
2055	6.3886
2060	6.1981
2065	6.03233
2070	5.86933
2075	5.72234
2080	5.597
2085	5.48887
2090	5.40989
2095	5.33726
2100	5.27332