Year	Percent
1950	4.70777
1955	4.57528
1960	4.51758
1965	4.53556
1970	4.58855
1975	4.65791
1980	5.16081
1985	5.03341
1990	5.26171
1995	5.25948
2000	5.34905
2005	5.95603
2010	6.74519
2015	7.86496
2020	8.99616
2025	10.44735
2030	11.7264
2035	12.87059
2040	12.87219
2045	16.97049
2050	18.76776
2055	21.32314
2060	23.25814
2065	24.58262
2070	26.12014
2075	27.82999
2080	29.46213
2085	30.76821
2090	31.89509
2095	32.98238
2100	34.08862