Year	Percent
1950	10.27595
1955	10.46333
1960	10.3967
1965	10.27887
1970	9.98908
1975	10.24429
1980	10.56612
1985	10.65668
1990	11.14418
1995	11.50689
2000	11.40594
2005	11.21243
2010	11.14754
2015	11.37999
2020	11.46944
2025	11.11556
2030	10.83438
2035	10.72622
2040	10.62363
2045	10.45732
2050	10.22459
2055	9.97166
2060	9.75393
2065	9.55486
2070	9.36903
2075	9.14131
2080	8.91983
2085	8.70488
2090	8.50452
2095	8.30987
2100	8.10876