Year	Percent
1950	7.40593
1955	6.64927
1960	5.91238
1965	5.39255
1970	5.09687
1975	4.99721
1980	4.9996
1985	5.27094
1990	6.19906
1995	6.5319
2000	6.78987
2005	7.36145
2010	7.91593
2015	8.71283
2020	9.34188
2025	9.91899
2030	10.58028
2035	11.48204
2040	12.71836
2045	14.14868
2050	15.65789
2055	17.2712
2060	18.9947
2065	20.65695
2070	22.18641
2075	23.58025
2080	25.0177
2085	26.46107
2090	27.86797
2095	29.18173
2100	30.38886