Year	Percent
1950	10.86174
1955	9.11621
1960	9.94675
1965	10.00988
1970	10.41914
1975	10.3602
1980	10.42643
1985	10.57556
1990	10.5754
1995	10.71585
2000	10.89583
2005	10.97607
2010	11.13701
2015	11.17722
2020	11.35578
2025	11.34432
2030	11.18272
2035	11.018
2040	10.84825
2045	10.64865
2050	10.38268
2055	10.06613
2060	9.74324
2065	9.42262
2070	9.10986
2075	8.79421
2080	8.47635
2085	8.17104
2090	7.88015
2095	7.6013
2100	7.33948