Year	Percent
1950	11.4852
1955	10.32945
1960	9.11864
1965	8.55204
1970	7.93154
1975	7.42894
1980	6.68035
1985	6.60193
1990	8.34169
1995	8.02882
2000	8.27028
2005	7.06465
2010	6.44444
2015	7.1666
2020	8.38079
2025	10.22906
2030	11.5706
2035	12.53136
2040	13.26776
2045	14.4062
2050	16.70486
2055	18.29311
2060	18.96332
2065	19.01995
2070	20.1065
2075	22.47204
2080	24.34568
2085	25.71308
2090	26.77728
2095	27.87325
2100	29.09348