Year	Percent
1950	12.02979
1955	8.07953
1960	8.6807
1965	11.33695
1970	12.9746
1975	13.21474
1980	12.43865
1985	11.87752
1990	11.71867
1995	11.56097
2000	12.54972
2005	11.9915
2010	9.27807
2015	8.77095
2020	8.69118
2025	10.39472
2030	9.62589
2035	8.58765
2040	7.74697
2045	7.46535
2050	7.57175
2055	7.60727
2060	7.34269
2065	6.88151
2070	6.4966
2075	6.31778
2080	6.28349
2085	6.25773
2090	6.13704
2095	5.93961
2100	5.75555