Year	Percent
1950	4.69912
1955	4.87322
1960	5.05978
1965	5.24622
1970	5.42188
1975	5.63176
1980	5.79623
1985	5.85733
1990	6.67899
1995	6.67179
2000	6.96207
2005	7.45697
2010	8.26022
2015	9.36349
2020	10.43884
2025	11.50813
2030	12.54649
2035	13.45105
2040	14.84923
2045	16.91997
2050	19.29336
2055	21.68123
2060	24.0027
2065	25.73089
2070	27.27816
2075	28.61039
2080	29.949
2085	31.24439
2090	32.43705
2095	33.51471
2100	34.47784