Year	Percent
1950	11.43889
1955	11.52167
1960	11.85884
1965	11.60744
1970	11.6519
1975	11.61419
1980	11.30279
1985	10.93847
1990	10.97869
1995	12.90801
2000	11.9586
2005	11.26515
2010	9.38817
2015	7.8561
2020	7.38459
2025	7.48752
2030	7.66223
2035	7.07785
2040	6.30785
2045	5.76604
2050	5.51416
2055	5.50312
2060	5.54267
2065	5.45461
2070	5.2377
2075	5.00227
2080	4.8683
2085	4.8573
2090	4.89896
2095	4.90745
2100	4.85506