Year	Percent
1950	11.41385
1955	10.92751
1960	11.47983
1965	11.7289
1970	11.75917
1975	11.84614
1980	12.11217
1985	12.25832
1990	11.76756
1995	11.54656
2000	11.95684
2005	12.58805
2010	13.26079
2015	12.91302
2020	12.88257
2025	12.69318
2030	12.7328
2035	12.55267
2040	12.28499
2045	11.94745
2050	11.5787
2055	11.23848
2060	10.91612
2065	10.55935
2070	10.18713
2075	9.81091
2080	9.46765
2085	9.14001
2090	8.82769
2095	8.52038
2100	8.21647