Year	Percent
1950	19.68662
1955	19.05371
1960	17.6509
1965	16.35341
1970	15.48007
1975	14.74622
1980	13.75734
1985	12.49058
1990	11.80957
1995	12.84202
2000	15.60114
2005	19.15287
2010	22.34811
2015	24.09378
2020	25.01377
2025	25.98755
2030	27.35875
2035	28.5181
2040	27.73661
2045	26.15204
2050	24.78594
2055	23.9827
2060	24.6592
2065	25.5529
2070	25.36608
2075	24.347
2080	23.4348
2085	22.85516
2090	22.9241
2095	23.29758
2100	23.47899