Year	Percent
1950	26.96513
1955	26.63142
1960	26.45145
1965	26.80749
1970	26.69088
1975	27.54337
1980	28.02208
1985	27.92303
1990	28.10959
1995	28.32418
2000	29.13446
2005	30.06049
2010	30.81433
2015	31.45557
2020	31.80378
2025	31.79874
2030	31.50338
2035	30.86311
2040	30.11432
2045	29.41315
2050	28.80308
2055	28.27472
2060	27.6235
2065	26.91567
2070	26.21278
2075	25.55437
2080	24.9474
2085	24.38259
2090	23.84953
2095	23.35023
2100	22.89508