Year	Percent
1950	5.49536
1955	5.88464
1960	6.82876
1965	8.11053
1970	9.54262
1975	10.43186
1980	10.21299
1985	10.05713
1990	11.12751
1995	11.66023
2000	11.71631
2005	11.76263
2010	13.40066
2015	14.36816
2020	15.06656
2025	15.79768
2030	16.6153
2035	17.76636
2040	18.88862
2045	19.78087
2050	20.53512
2055	21.24757
2060	22.18579
2065	23.22229
2070	24.49788
2075	26.09481
2080	27.42222
2085	28.59089
2090	29.7042
2095	30.85238
2100	32.04293