Year	Percent
1950	12.70999
1955	13.6704
1960	13.172
1965	13.30611
1970	13.64451
1975	13.74809
1980	14.27309
1985	10.90911
1990	13.2558
1995	13.31881
2000	16.88528
2005	17.51404
2010	14.41124
2015	14.66015
2020	14.47145
2025	13.73179
2030	13.3648
2035	12.9272
2040	12.31942
2045	11.6249
2050	10.95101
2055	10.31128
2060	9.76159
2065	9.23506
2070	8.73424
2075	8.22194
2080	7.7309
2085	7.31096
2090	6.93194
2095	6.62023
2100	6.3357