Year	Percent
1950	10.09269
1955	10.85636
1960	12.67837
1965	14.2861
1970	15.49917
1975	16.11937
1980	14.73285
1985	15.1418
1990	19.10852
1995	21.1953
2000	22.76598
2005	24.17588
2010	25.46726
2015	28.02542
2020	30.36986
2025	32.66675
2030	34.90063
2035	36.67039
2040	38.70336
2045	40.10692
2050	40.69927
2055	40.25579
2060	39.31726
2065	38.34366
2070	38.15148
2075	38.30122
2080	38.38999
2085	38.38669
2090	38.36893
2095	38.50859
2100	38.89782