Year	Percent
1950	10.93393
1955	9.16714
1960	8.63992
1965	10.12999
1970	11.24356
1975	11.33075
1980	10.406
1985	9.87866
1990	10.31363
1995	12.00182
2000	12.86591
2005	12.31334
2010	10.11546
2015	10.23346
2020	10.45547
2025	10.77414
2030	10.37988
2035	9.73523
2040	9.08485
2045	8.72847
2050	8.55194
2055	8.3242
2060	7.92889
2065	7.446
2070	7.01147
2075	6.68524
2080	6.42203
2085	6.1863
2090	5.9309
2095	5.68601
2100	5.48311