Year	Percent
1950	10.08778
1955	10.03835
1960	9.97329
1965	9.79277
1970	10.18016
1975	10.31842
1980	10.22491
1985	10.3133
1990	11.2995
1995	10.55671
2000	10.60343
2005	10.35703
2010	10.50743
2015	10.81525
2020	11.07886
2025	11.06842
2030	10.89431
2035	10.61756
2040	10.49101
2045	10.36695
2050	10.17718
2055	9.89994
2060	9.58998
2065	9.27098
2070	8.96726
2075	8.67805
2080	8.39137
2085	8.11941
2090	7.85241
2095	7.60264
2100	7.36275