Year	Percent
1950	9.90358
1955	8.09788
1960	8.59121
1965	7.98163
1970	8.24611
1975	7.78643
1980	7.69159
1985	7.14495
1990	7.16533
1995	6.4089
2000	5.24205
2005	5.01532
2010	4.81257
2015	4.71256
2020	4.98579
2025	4.41292
2030	3.93434
2035	3.67157
2040	3.69272
2045	3.83595
2050	4.01001
2055	4.08227
2060	4.01656
2065	3.93001
2070	3.94387
2075	4.07055
2080	4.23661
2085	4.35229
2090	4.37473
2095	4.3314
2100	4.29268