Year	Percent
1950	8.59135
1955	9.81877
1960	13.22402
1965	14.74972
1970	15.77249
1975	13.43299
1980	11.21248
1985	10.24033
1990	10.84334
1995	11.94724
2000	10.94256
2005	8.2638
2010	7.07675
2015	7.26909
2020	8.54377
2025	7.63457
2030	6.53349
2035	5.90452
2040	5.83957
2045	5.90745
2050	5.83018
2055	5.62205
2060	5.39126
2065	5.24402
2070	5.22621
2075	5.26098
2080	5.2641
2085	5.21184
2090	5.12704
2095	5.0535
2100	5.02322