Year	Percent
1950	14.05694
1955	12.40998
1960	11.1353
1965	11.03243
1970	11.61626
1975	13.16629
1980	13.51285
1985	13.7749
1990	17.85271
1995	18.67713
2000	20.66687
2005	20.60547
2010	21.51009
2015	23.50771
2020	25.19574
2025	27.32307
2030	28.67169
2035	30.01041
2040	31.38909
2045	32.51466
2050	33.76102
2055	34.73899
2060	34.33484
2065	33.34085
2070	33.5174
2075	34.69803
2080	35.44671
2085	35.79904
2090	36.00148
2095	36.3573
2100	36.9549