Year	Percent
1950	26.88379
1955	29.5543
1960	32.16636
1965	28.47573
1970	24.62903
1975	24.63516
1980	26.77838
1985	32.20598
1990	33.88328
1995	33.85368
2000	32.76352
2005	32.40775
2010	34.14261
2015	34.63997
2020	33.33678
2025	30.32161
2030	27.31803
2035	26.59248
2040	26.97148
2045	27.34802
2050	26.85523
2055	25.05286
2060	24.01657
2065	23.84789
2070	23.99583
2075	23.87577
2080	23.428
2085	22.93509
2090	22.61013
2095	22.48499
2100	22.45787