Year	Percent
1950	10.31056
1955	10.43378
1960	10.63027
1965	10.65886
1970	10.03241
1975	9.90687
1980	9.43224
1985	9.91492
1990	10.40775
1995	10.25361
2000	10.92623
2005	10.75796
2010	11.37504
2015	11.9232
2020	11.52828
2025	10.76231
2030	10.48405
2035	10.16772
2040	9.81374
2045	9.36143
2050	8.90579
2055	8.45333
2060	8.06172
2065	7.69501
2070	7.34746
2075	7.01977
2080	6.72684
2085	6.46169
2090	6.23939
2095	6.04198
2100	5.87515