Year	Percent
1950	9.66359
1955	11.04189
1960	12.35273
1965	13.93094
1970	13.79451
1975	14.64426
1980	14.32353
1985	11.72528
1990	10.15324
1995	9.57244
2000	9.83742
2005	9.17687
2010	8.7148
2015	8.7404
2020	7.971
2025	7.60096
2030	6.98593
2035	6.68124
2040	6.54226
2045	6.40084
2050	6.19036
2055	5.93887
2060	5.72138
2065	5.55542
2070	5.43658
2075	5.32221
2080	5.19848
2085	5.06828
2090	4.95874
2095	4.88909
2100	4.85196