Year	Percent
1950	8.76349
1955	8.57752
1960	8.82512
1965	8.50031
1970	7.77111
1975	7.05101
1980	5.92073
1985	5.41795
1990	6.63738
1995	6.62601
2000	6.83666
2005	6.55091
2010	6.18648
2015	7.06468
2020	8.56541
2025	10.35439
2030	11.73906
2035	13.22571
2040	14.83123
2045	16.92903
2050	19.62235
2055	22.18783
2060	23.59234
2065	24.19856
2070	25.45135
2075	27.11275
2080	28.65757
2085	29.74534
2090	30.47112
2095	31.16139
2100	31.96588