Year	Percent
1950	9.84947
1955	9.76691
1960	9.75157
1965	9.92836
1970	9.86385
1975	9.75718
1980	9.86135
1985	9.88361
1990	9.44241
1995	10.6086
2000	10.42496
2005	11.01462
2010	10.84748
2015	8.41442
2020	7.42663
2025	7.83414
2030	7.99565
2035	8.21988
2040	7.59059
2045	6.7274
2050	6.11722
2055	5.83299
2060	5.81689
2065	5.85963
2070	5.76333
2075	5.52461
2080	5.26339
2085	5.10929
2090	5.087
2095	5.1218
2100	5.12456