Year	Percent
1950	11.36989
1955	10.59393
1960	10.63037
1965	11.78108
1970	11.78299
1975	11.71405
1980	11.47878
1985	11.32813
1990	11.22497
1995	11.38788
2000	11.04428
2005	10.39103
2010	9.92527
2015	9.49525
2020	8.95163
2025	8.07953
2030	7.75146
2035	7.42377
2040	7.10811
2045	6.73908
2050	6.36319
2055	6.07551
2060	5.87006
2065	5.7011
2070	5.5376
2075	5.38732
2080	5.25746
2085	5.15831
2090	5.08957
2095	5.0406
2100	4.98763