Year	Percent
1950	11.94558
1955	11.38001
1960	10.48483
1965	11.10967
1970	11.45909
1975	11.64097
1980	11.76685
1985	12.26417
1990	12.886
1995	12.69421
2000	12.4014
2005	12.61103
2010	12.91683
2015	12.55634
2020	12.19318
2025	12.12637
2030	11.99576
2035	11.74609
2040	11.41761
2045	11.11998
2050	10.83647
2055	10.55702
2060	10.26776
2065	9.96962
2070	9.70045
2075	9.4305
2080	9.16437
2085	8.8902
2090	8.6345
2095	8.37544
2100	8.13561