Year	Percent
1950	14.75365
1955	15.49202
1960	15.95985
1965	16.06098
1970	15.93811
1975	15.64741
1980	15.26088
1985	14.85652
1990	14.18633
1995	13.5727
2000	13.7344
2005	14.37596
2010	15.15456
2015	15.99691
2020	16.83272
2025	17.94823
2030	19.60136
2035	21.1411
2040	22.26034
2045	22.70727
2050	23.19199
2055	24.11224
2060	25.04242
2065	25.94463
2070	26.24562
2075	26.14113
2080	26.16119
2085	26.38782
2090	26.69708
2095	26.83659
2100	26.7071