Year	Percent
1950	26.56856
1955	27.74985
1960	26.17692
1965	25.98851
1970	24.71471
1975	23.91742
1980	25.27971
1985	26.45789
1990	29.86943
1995	27.6376
2000	27.81742
2005	29.03041
2010	28.16521
2015	27.40278
2020	29.04158
2025	31.3353
2030	33.65036
2035	33.44525
2040	31.99158
2045	30.25513
2050	29.15689
2055	29.13479
2060	29.61534
2065	29.60498
2070	28.83091
2075	27.68214
2080	26.74152
2085	26.3304
2090	26.29689
2095	26.19033
2100	25.6863