Year	Percent
1950	8.48275
1955	8.96939
1960	7.92738
1965	7.64805
1970	10.47455
1975	11.13755
1980	11.6357
1985	10.87252
1990	10.39889
1995	9.92378
2000	9.78861
2005	8.13854
2010	8.06109
2015	6.01447
2020	5.89793
2025	6.65928
2030	7.41987
2035	6.78787
2040	5.95409
2045	5.56588
2050	5.58765
2055	5.7927
2060	5.89709
2065	5.77059
2070	5.5003
2075	5.29507
2080	5.24964
2085	5.28566
2090	5.29259
2095	5.19921
2100	5.06066