Year	Percent
1950	9.539
1955	8.98556
1960	8.64256
1965	8.67983
1970	8.19316
1975	7.76686
1980	6.76867
1985	6.86452
1990	6.64609
1995	6.2298
2000	6.20464
2005	6.27999
2010	6.25095
2015	6.00949
2020	5.78325
2025	5.65174
2030	5.61159
2035	5.63185
2040	5.6237
2045	5.55554
2050	5.46604
2055	5.40577
2060	5.39322
2065	5.40402
2070	5.39343
2075	5.34869
2080	5.27895
2085	5.20966
2090	5.16422
2095	5.13012
2100	5.11064