Year	Percent
1950	10.88361
1955	13.58259
1960	12.61842
1965	10.72263
1970	6.62554
1975	11.24145
1980	9.70073
1985	12.46805
1990	11.45592
1995	7.59218
2000	8.17178
2005	7.98499
2010	8.21078
2015	7.73862
2020	7.26732
2025	6.53451
2030	6.32775
2035	6.36796
2040	6.36377
2045	6.20114
2050	5.91051
2055	5.64269
2060	5.53139
2065	5.56689
2070	5.59902
2075	5.53522
2080	5.39036
2085	5.25474
2090	5.18691
2095	5.19373
2100	5.21562