Year	Percent
1950	14.51789
1955	14.89326
1960	14.85096
1965	14.6333
1970	14.36428
1975	14.98083
1980	14.54539
1985	13.97226
1990	13.73843
1995	13.20056
2000	13.68273
2005	15.10617
2010	17.08002
2015	19.37154
2020	21.60686
2025	23.4326
2030	24.90942
2035	26.34902
2040	27.3453
2045	27.89981
2050	27.90636
2055	27.6103
2060	27.02895
2065	26.2456
2070	25.59227
2075	24.91424
2080	24.1639
2085	23.48578
2090	22.94372
2095	22.5595
2100	22.29765