Year	Percent
1950	28.06658
1955	26.57049
1960	25.292
1965	24.30844
1970	24.86888
1975	27.07548
1980	29.45079
1985	31.89125
1990	33.54764
1995	33.28319
2000	33.32024
2005	33.24485
2010	32.89589
2015	33.08916
2020	32.40233
2025	31.34475
2030	30.05556
2035	28.62441
2040	27.46551
2045	26.21683
2050	25.15823
2055	24.29144
2060	23.55162
2065	22.97981
2070	22.52457
2075	22.17241
2080	21.90255
2085	21.69147
2090	21.53288
2095	21.41978
2100	21.33383