Year	Percent
1950	11.77407
1955	11.1832
1960	11.48424
1965	13.09894
1970	12.92839
1975	12.6089
1980	12.71314
1985	13.10129
1990	13.61775
1995	13.69387
2000	13.11754
2005	13.29234
2010	13.04449
2015	12.51019
2020	11.14707
2025	10.47122
2030	10.01311
2035	9.50086
2040	8.94652
2045	8.38969
2050	7.87717
2055	7.42047
2060	7.02502
2065	6.67889
2070	6.38036
2075	6.10274
2080	5.86797
2085	5.66677
2090	5.50983
2095	5.37572
2100	5.26588