Year	Percent
1950	10.29397
1955	8.9511
1960	8.74764
1965	9.40818
1970	11.08992
1975	10.96478
1980	10.8748
1985	10.91221
1990	11.50703
1995	12.07201
2000	12.09041
2005	11.73379
2010	10.69858
2015	11.82155
2020	12.54314
2025	10.96162
2030	9.83833
2035	8.78237
2040	8.26302
2045	7.92775
2050	7.70158
2055	7.43082
2060	6.97732
2065	6.5084
2070	6.14805
2075	5.92739
2080	5.78938
2085	5.66544
2090	5.52422
2095	5.37778
2100	5.25364