Year	Percent
1950	5.5832
1955	5.16119
1960	4.89538
1965	4.72122
1970	4.59324
1975	6.20079
1980	5.07266
1985	4.77189
1990	4.98853
1995	5.327
2000	4.78677
2005	4.92523
2010	5.54999
2015	7.00997
2020	7.90102
2025	8.42677
2030	8.03432
2035	7.11377
2040	7.10729
2045	8.97477
2050	11.71177
2055	14.59455
2060	17.20249
2065	18.95626
2070	19.76082
2075	20.20229
2080	21.0224
2085	22.27286
2090	23.75877
2095	25.0053
2100	25.78806