Year	Percent
1950	11.14654
1955	12.69717
1960	14.24071
1965	15.25507
1970	16.273
1975	16.18246
1980	16.07301
1985	16.77505
1990	17.38762
1995	18.85992
2000	20.73728
2005	23.41978
2010	24.59672
2015	24.79328
2020	24.0037
2025	22.42084
2030	21.87548
2035	22.59042
2040	24.20117
2045	25.56861
2050	25.8917
2055	25.40695
2060	24.6774
2065	24.29193
2070	24.29643
2075	24.27631
2080	24.03384
2085	23.57012
2090	23.08466
2095	22.74836
2100	22.5718