Year	Percent
1950	12.56741
1955	11.2445
1960	10.21707
1965	10.42871
1970	11.46082
1975	11.99057
1980	11.48039
1985	10.42294
1990	10.1929
1995	10.79826
2000	11.3501
2005	12.91391
2010	13.03225
2015	12.99686
2020	13.61906
2025	14.89967
2030	17.31732
2035	18.26711
2040	19.29473
2045	20.08363
2050	20.98505
2055	22.71384
2060	23.86579
2065	24.55467
2070	24.86234
2075	25.23728
2080	25.74868
2085	26.23677
2090	26.47546
2095	26.37737
2100	26.06804