Year	Percent
1950	10.9738
1955	10.90615
1960	10.80009
1965	12.16058
1970	12.05409
1975	11.91718
1980	11.78169
1985	11.9088
1990	11.87017
1995	11.56106
2000	10.98085
2005	10.18925
2010	9.6497
2015	9.15023
2020	8.89532
2025	8.85506
2030	8.4513
2035	7.9964
2040	7.56926
2045	7.23301
2050	6.98657
2055	6.76461
2060	6.52108
2065	6.27375
2070	6.04498
2075	5.86909
2080	5.73364
2085	5.61586
2090	5.51189
2095	5.40756
2100	5.31518