Year	Percent
1950	7.09601
1955	8.60681
1960	11.46681
1965	13.46052
1970	13.844
1975	12.38015
1980	11.61003
1985	11.25645
1990	12.08065
1995	12.76734
2000	11.54228
2005	9.71669
2010	8.83722
2015	9.90952
2020	11.3882
2025	10.17707
2030	8.96814
2035	8.13364
2040	7.89903
2045	7.90582
2050	7.78898
2055	7.45465
2060	6.98629
2065	6.56341
2070	6.303
2075	6.17852
2080	6.07549
2085	5.91296
2090	5.69192
2095	5.47739
2100	5.32218