Year	Percent
1950	35.83065
1955	31.40674
1960	24.4683
1965	20.78397
1970	22.11359
1975	28.69959
1980	34.02437
1985	40.34887
1990	42.33034
1995	40.88403
2000	36.40119
2005	34.36775
2010	36.11843
2015	35.46077
2020	33.09285
2025	26.93163
2030	20.90506
2035	18.84403
2040	19.45627
2045	21.22434
2050	22.28646
2055	21.99748
2060	20.99935
2065	20.2957
2070	20.23588
2075	20.74169
2080	21.34572
2085	21.6694
2090	21.56118
2095	21.15041
2100	20.73051