Year	Percent
1950	11.62322
1955	11.89982
1960	12.54484
1965	13.73175
1970	15.15474
1975	15.88057
1980	16.41347
1985	16.84731
1990	16.82026
1995	16.21939
2000	15.33073
2005	14.39325
2010	13.87605
2015	13.59554
2020	12.8079
2025	11.71391
2030	10.92782
2035	10.39737
2040	10.01958
2045	9.66509
2050	9.25785
2055	8.78631
2060	8.31629
2065	7.91584
2070	7.58779
2075	7.30723
2080	7.02531
2085	6.7483
2090	6.48402
2095	6.25153
2100	6.06353