Year	Percent
1950	11.34172
1955	11.8453
1960	12.54475
1965	12.39719
1970	12.59232
1975	12.68395
1980	12.6381
1985	13.00265
1990	13.19147
1995	13.17454
2000	12.96629
2005	12.78279
2010	12.4682
2015	11.24069
2020	10.70688
2025	11.09916
2030	10.90497
2035	10.33289
2040	9.6796
2045	9.20396
2050	8.82768
2055	8.46718
2060	8.07377
2065	7.70041
2070	7.35576
2075	7.03636
2080	6.78041
2085	6.55578
2090	6.34667
2095	6.16139
2100	5.99418