Year	Percent
1950	9.24522
1955	8.64168
1960	8.23411
1965	7.46611
1970	6.67883
1975	5.7072
1980	4.57429
1985	4.03247
1990	5.34813
1995	5.52631
2000	5.938
2005	5.78719
2010	5.45065
2015	6.29943
2020	7.63527
2025	9.13592
2030	10.23967
2035	11.47949
2040	12.87206
2045	14.76156
2050	17.28257
2055	19.74914
2060	21.03343
2065	21.53948
2070	22.73078
2075	24.42307
2080	26.03757
2085	27.21892
2090	28.04686
2095	28.83878
2100	29.75697