Year	Percent
1950	7.13028
1955	7.72556
1960	8.36217
1965	9.39294
1970	10.84429
1975	12.47046
1980	12.21102
1985	12.37952
1990	16.22232
1995	16.82677
2000	18.43946
2005	17.17958
2010	17.97174
2015	20.12774
2020	22.35163
2025	24.26717
2030	24.46458
2035	25.36108
2040	26.40176
2045	27.9825
2050	29.91896
2055	29.74653
2060	28.19347
2065	27.22037
2070	26.99867
2075	27.86755
2080	28.63918
2085	29.19498
2090	29.39997
2095	29.48917
2100	29.80775