Year	Percent
1950	5.02617
1955	5.26288
1960	5.65083
1965	5.53929
1970	5.98097
1975	6.88382
1980	7.56117
1985	6.22446
1990	9.40124
1995	8.27283
2000	8.53617
2005	8.13631
2010	8.07328
2015	8.85152
2020	9.98799
2025	11.90055
2030	12.78579
2035	14.25513
2040	16.0526
2045	19.25479
2050	23.39915
2055	26.03292
2060	27.89054
2065	28.96923
2070	30.52918
2075	32.54375
2080	34.60128
2085	36.18528
2090	37.15378
2095	37.83096
2100	38.61239