Year	Percent
1950	6.25255
1955	5.74999
1960	5.48076
1965	5.3952
1970	5.23768
1975	5.12699
1980	5.12357
1985	5.0768
1990	5.27175
1995	5.08047
2000	4.93793
2005	5.02481
2010	5.17663
2015	5.36734
2020	5.7134
2025	6.22719
2030	6.80567
2035	7.5308
2040	8.41942
2045	9.44965
2050	10.87944
2055	12.63304
2060	14.24161
2065	15.59955
2070	16.94333
2075	18.66689
2080	20.34612
2085	21.92317
2090	23.37395
2095	24.7231
2100	26.00992