Year	Percent
1950	11.68433
1955	11.57729
1960	12.24195
1965	12.9378
1970	13.58004
1975	14.08155
1980	14.3752
1985	14.72418
1990	14.90245
1995	14.80678
2000	14.8563
2005	14.63393
2010	14.40139
2015	14.24798
2020	13.92829
2025	13.45175
2030	13.01417
2035	12.57976
2040	12.13967
2045	11.70854
2050	11.26615
2055	10.83319
2060	10.43365
2065	10.05048
2070	9.70787
2075	9.35707
2080	9.03128
2085	8.71577
2090	8.42845
2095	8.14376
2100	7.86318