Year	Percent
1950	10.37113
1955	12.76959
1960	14.35591
1965	13.9701
1970	11.30837
1975	10.90668
1980	10.76173
1985	10.87757
1990	10.86753
1995	8.68771
2000	6.92997
2005	7.50642
2010	9.21026
2015	10.5667
2020	9.10207
2025	7.89766
2030	7.15504
2035	7.00611
2040	7.1796
2045	7.29582
2050	7.10456
2055	6.64429
2060	6.17735
2065	5.92984
2070	5.88374
2075	5.89536
2080	5.82618
2085	5.64219
2090	5.40708
2095	5.2146
2100	5.12727