Year	Percent
1950	14.87078
1955	14.35825
1960	14.17175
1965	14.15651
1970	13.64285
1975	12.97939
1980	12.47476
1985	12.02759
1990	11.71973
1995	12.28517
2000	12.8438
2005	14.07603
2010	16.8363
2015	20.37671
2020	24.2563
2025	27.06235
2030	28.44264
2035	28.12863
2040	26.85477
2045	25.80814
2050	25.41329
2055	26.04438
2060	26.6286
2065	26.73829
2070	26.08388
2075	24.89104
2080	24.12003
2085	23.8584
2090	23.95874
2095	24.07981
2100	23.9553