Year	Percent
1950	9.51774
1955	10.42781
1960	10.7483
1965	10.70236
1970	11.82897
1975	11.58374
1980	11.41173
1985	11.57032
1990	9.04702
1995	7.97484
2000	8.08528
2005	8.53305
2010	8.74912
2015	8.63665
2020	7.99163
2025	7.341
2030	6.98293
2035	6.81795
2040	6.66568
2045	6.43584
2050	6.16181
2055	5.93435
2060	5.7828
2065	5.69494
2070	5.6124
2075	5.50661
2080	5.38226
2085	5.28096
2090	5.2067
2095	5.1755
2100	5.15529