Year	Percent
1950	11.78629
1955	11.98918
1960	11.8418
1965	11.41984
1970	11.70408
1975	11.8326
1980	11.69053
1985	12.20527
1990	12.67935
1995	12.77547
2000	12.39327
2005	12.058
2010	12.11423
2015	12.43747
2020	12.59575
2025	12.62911
2030	12.294
2035	11.93412
2040	11.64566
2045	11.38392
2050	11.09317
2055	10.74846
2060	10.37655
2065	10.01904
2070	9.65089
2075	9.33011
2080	9.03587
2085	8.7316
2090	8.42783
2095	8.13055
2100	7.86691