Year	Percent
1950	1.67515
1955	2.44632
1960	3.33535
1965	3.57154
1970	4.08394
1975	3.794
1980	3.59894
1985	3.78603
1990	4.07384
1995	4.34618
2000	4.4364
2005	4.80276
2010	5.04073
2015	5.29406
2020	5.81132
2025	6.59355
2030	7.55292
2035	9.05496
2040	10.64904
2045	11.90771
2050	12.81261
2055	13.7836
2060	15.04458
2065	16.54236
2070	18.25996
2075	19.91834
2080	21.38896
2085	22.78056
2090	24.1836
2095	25.61426
2100	27.02684