Year	Percent
1950	6.41769
1955	6.49598
1960	7.25438
1965	8.43408
1970	9.58687
1975	11.01431
1980	11.18469
1985	11.37701
1990	13.33829
1995	14.61272
2000	14.73989
2005	14.69001
2010	16.3213
2015	17.26542
2020	17.95738
2025	18.56191
2030	19.22803
2035	20.26637
2040	21.29875
2045	22.07747
2050	22.66198
2055	23.16103
2060	23.92967
2065	24.83553
2070	26.00039
2075	27.51032
2080	28.79979
2085	29.96965
2090	31.10977
2095	32.30865
2100	33.54698