Year	Percent
1950	27.86549
1955	26.59259
1960	25.52136
1965	24.6652
1970	25.25448
1975	27.32955
1980	29.58648
1985	31.91391
1990	33.52381
1995	33.35541
2000	33.33302
2005	33.0494
2010	32.43406
2015	32.35237
2020	31.43844
2025	30.16753
2030	28.71408
2035	27.15579
2040	25.8839
2045	24.55857
2050	23.44335
2055	22.54354
2060	21.80204
2065	21.25277
2070	20.83949
2075	20.53926
2080	20.33064
2085	20.18141
2090	20.08661
2095	20.03233
2100	19.99993