Year	Percent
1950	9.5969
1955	10.06696
1960	6.572
1965	7.10062
1970	9.63762
1975	10.95172
1980	11.10391
1985	10.36557
1990	9.90091
1995	10.06772
2000	10.36487
2005	11.3493
2010	10.76789
2015	8.15922
2020	7.82465
2025	7.87215
2030	9.5259
2035	8.86768
2040	7.92027
2045	7.16199
2050	6.93647
2055	7.08096
2060	7.14899
2065	6.91776
2070	6.48752
2075	6.12919
2080	5.97094
2085	5.95368
2090	5.94318
2095	5.84094
2100	5.66568