Year	Percent
1950	10.77933
1955	10.63572
1960	9.92841
1965	9.94863
1970	10.03686
1975	11.41169
1980	12.441
1985	13.60042
1990	11.25556
1995	10.75919
2000	11.76465
2005	9.82868
2010	10.63983
2015	10.80065
2020	11.22869
2025	11.07494
2030	10.07476
2035	9.15353
2040	8.97381
2045	9.14017
2050	9.24775
2055	9.05723
2060	8.5125
2065	7.89482
2070	7.51779
2075	7.44473
2080	7.43509
2085	7.28319
2090	6.94429
2095	6.54944
2100	6.24352