Year	Percent
1950	5.94354
1955	6.18538
1960	7.0386
1965	8.27078
1970	9.5646
1975	10.72223
1980	10.69948
1985	10.71743
1990	12.23484
1995	13.15457
2000	13.24986
2005	13.24584
2010	14.87864
2015	15.82853
2020	16.51847
2025	17.1816
2030	17.91953
2035	19.01139
2040	20.08626
2045	20.91984
2050	21.58818
2055	22.19379
2060	23.04737
2065	24.01876
2070	25.23927
2075	26.79298
2080	28.10149
2085	29.27074
2090	30.39743
2095	31.57093
2100	32.7854