Year	Percent
1950	10.39113
1955	10.44479
1960	10.16788
1965	10.60782
1970	11.34847
1975	11.27299
1980	11.15032
1985	10.92992
1990	10.01152
1995	10.33189
2000	10.96914
2005	11.04917
2010	10.74845
2015	10.36231
2020	9.24425
2025	8.85876
2030	8.45067
2035	8.2958
2040	7.9987
2045	7.60148
2050	7.20722
2055	6.90027
2060	6.65743
2065	6.46918
2070	6.29327
2075	6.1148
2080	5.94885
2085	5.81204
2090	5.68473
2095	5.55678
2100	5.44562