Year	Percent
1950	10.8776
1955	9.19653
1960	10.07543
1965	10.11429
1970	10.4423
1975	10.40052
1980	10.48406
1985	10.65736
1990	10.6847
1995	10.85996
2000	11.05095
2005	11.11178
2010	11.24704
2015	11.27787
2020	11.46526
2025	11.45882
2030	11.28735
2035	11.09355
2040	10.92615
2045	10.72625
2050	10.46294
2055	10.15512
2060	9.83987
2065	9.52639
2070	9.21646
2075	8.90071
2080	8.58096
2085	8.2739
2090	7.98152
2095	7.70146
2100	7.43811