Year	Percent
1950	27.81368
1955	27.63993
1960	27.2421
1965	26.6578
1970	26.08373
1975	25.68571
1980	25.59759
1985	26.16902
1990	26.52267
1995	27.20293
2000	28.25411
2005	28.47168
2010	28.68462
2015	29.00668
2020	29.35965
2025	29.84104
2030	30.13609
2035	30.30891
2040	30.38466
2045	30.40378
2050	30.49988
2055	30.55475
2060	30.48367
2065	30.32183
2070	30.12477
2075	29.93224
2080	29.71356
2085	29.46263
2090	29.17647
2095	28.86369
2100	28.55818