Year	Percent
1950	12.02109
1955	11.70237
1960	13.42228
1965	13.30434
1970	13.09137
1975	12.88401
1980	13.1679
1985	13.65553
1990	14.00816
1995	14.2076
2000	14.34545
2005	14.33261
2010	14.26533
2015	14.11756
2020	13.73547
2025	13.30514
2030	12.83689
2035	12.33373
2040	11.80704
2045	11.26772
2050	10.75494
2055	10.26224
2060	9.77931
2065	9.33119
2070	8.90489
2075	8.50809
2080	8.13089
2085	7.78554
2090	7.45127
2095	7.14523
2100	6.85299