Year	Percent
1950	17.11365
1955	17.75453
1960	17.28234
1965	15.94776
1970	14.80622
1975	13.91674
1980	13.09919
1985	12.92578
1990	13.73221
1995	14.80598
2000	16.86778
2005	18.86926
2010	20.78972
2015	21.97676
2020	22.29365
2025	22.60736
2030	23.86141
2035	25.5449
2040	27.64637
2045	27.9794
2050	26.75108
2055	24.86954
2060	24.03913
2065	24.19753
2070	24.47769
2075	24.74923
2080	23.37869
2085	22.23424
2090	21.65339
2095	21.61744
2100	21.7993