Year	Percent
1950	30.96689
1955	29.35723
1960	27.84727
1965	27.35024
1970	26.66299
1975	26.89363
1980	26.60233
1985	25.82999
1990	24.63214
1995	25.21257
2000	26.32875
2005	27.28266
2010	27.21815
2015	26.55053
2020	26.49018
2025	27.22931
2030	28.62578
2035	29.8553
2040	30.77277
2045	31.34861
2050	31.66388
2055	31.96919
2060	32.20099
2065	32.19356
2070	31.91913
2075	31.48011
2080	30.95812
2085	30.43731
2090	29.92316
2095	29.38031
2100	28.82043