Year	Percent
1950	9.58531
1955	9.29278
1960	9.63299
1965	9.86124
1970	10.17845
1975	10.1134
1980	10.25021
1985	10.75127
1990	11.26075
1995	11.05005
2000	10.60999
2005	11.12836
2010	11.72568
2015	10.99098
2020	10.04511
2025	9.7059
2030	10.19137
2035	9.87415
2040	9.43261
2045	8.94522
2050	8.53479
2055	8.22989
2060	7.9898
2065	7.72459
2070	7.40974
2075	7.08961
2080	6.81005
2085	6.57945
2090	6.3896
2095	6.222
2100	6.0478