Year	Percent
1950	15.18633
1955	15.08016
1960	14.98267
1965	14.82391
1970	14.6231
1975	14.29518
1980	14.03931
1985	13.73891
1990	13.15429
1995	13.4689
2000	14.06535
2005	15.145
2010	16.23916
2015	16.99351
2020	17.50433
2025	18.01848
2030	19.08352
2035	21.12142
2040	24.84568
2045	28.56012
2050	30.91845
2055	31.26815
2060	30.08839
2065	28.59696
2070	27.55108
2075	27.03974
2080	26.19226
2085	25.24301
2090	24.45987
2095	24.01277
2100	23.7833