Year	Percent
1950	16.71848
1955	16.439
1960	16.80328
1965	17.0925
1970	17.22269
1975	17.87393
1980	18.20417
1985	18.20829
1990	17.64323
1995	17.21322
2000	17.23187
2005	17.50808
2010	17.46728
2015	17.17014
2020	16.451
2025	15.76007
2030	15.15993
2035	14.57021
2040	13.94018
2045	13.25945
2050	12.56708
2055	11.91622
2060	11.28729
2065	10.73439
2070	10.22635
2075	9.72648
2080	9.25049
2085	8.80258
2090	8.40432
2095	8.02577
2100	7.6752