Year	Percent
1950	10.0908
1955	10.66051
1960	6.99077
1965	7.43147
1970	9.85312
1975	11.19495
1980	11.3376
1985	10.70318
1990	10.15039
1995	10.34531
2000	10.60507
2005	11.60313
2010	11.04816
2015	8.37725
2020	8.03423
2025	8.09574
2030	9.8201
2035	9.15672
2040	8.19303
2045	7.41983
2050	7.1995
2055	7.36516
2060	7.45359
2065	7.22879
2070	6.79173
2075	6.42596
2080	6.26686
2085	6.25354
2090	6.24864
2095	6.14679
2100	5.96304