Year	Percent
1950	11.89698
1955	10.30176
1960	10.1331
1965	12.81128
1970	13.65536
1975	14.05783
1980	13.27141
1985	12.33331
1990	12.25277
1995	12.46474
2000	11.47098
2005	10.69799
2010	9.29669
2015	8.68696
2020	8.44067
2025	8.72776
2030	8.10469
2035	7.46465
2040	6.9086
2045	6.5163
2050	6.28019
2055	6.11095
2060	5.91558
2065	5.67426
2070	5.4346
2075	5.24928
2080	5.13457
2085	5.06652
2090	5.00537
2095	4.92273
2100	4.83097