Year	Percent
1950	10.11157
1955	10.22931
1960	10.30302
1965	10.84116
1970	9.97675
1975	10.14353
1980	10.28164
1985	10.25824
1990	10.35061
1995	10.48403
2000	10.37267
2005	10.71478
2010	10.47763
2015	11.69521
2020	11.97717
2025	11.87719
2030	10.79269
2035	10.34265
2040	9.76326
2045	9.27272
2050	8.79432
2055	8.30088
2060	7.78789
2065	7.29265
2070	6.87148
2075	6.52573
2080	6.23002
2085	5.98565
2090	5.77169
2095	5.58925
2100	5.44671