Year	Percent
1950	11.80399
1955	11.4071
1960	11.43735
1965	13.22284
1970	13.09619
1975	12.92016
1980	12.84842
1985	11.62321
1990	8.80884
1995	13.20767
2000	13.64563
2005	12.89064
2010	10.61822
2015	9.26765
2020	9.35763
2025	9.37152
2030	8.97455
2035	8.21257
2040	7.61999
2045	7.28496
2050	7.06535
2055	6.78787
2060	6.42464
2065	6.08661
2070	5.83965
2075	5.67392
2080	5.5501
2085	5.41218
2090	5.26647
2095	5.139
2100	5.04357