Year	Percent
1950	28.44693
1955	27.5032
1960	26.21657
1965	25.59633
1970	24.00336
1975	24.28665
1980	24.13804
1985	25.76332
1990	27.74304
1995	28.23141
2000	29.58636
2005	30.9866
2010	32.28894
2015	32.54019
2020	32.37806
2025	31.92655
2030	32.25819
2035	33.16097
2040	33.55651
2045	33.42336
2050	32.65734
2055	31.54844
2060	30.87346
2065	30.44703
2070	29.99301
2075	29.32556
2080	28.51345
2085	27.67176
2090	26.91402
2095	26.28267
2100	25.72012