Year	Percent
1950	11.54175
1955	11.7026
1960	12.35939
1965	11.76059
1970	11.81685
1975	12.21353
1980	12.90313
1985	12.62126
1990	9.06837
1995	11.15326
2000	12.57306
2005	14.22579
2010	14.20434
2015	12.74997
2020	13.051
2025	12.90716
2030	12.28792
2035	12.03018
2040	11.72265
2045	11.25479
2050	10.69504
2055	10.12866
2060	9.58784
2065	9.12673
2070	8.68939
2075	8.27553
2080	7.84346
2085	7.42528
2090	7.06446
2095	6.73624
2100	6.46745