Year	Percent
1950	3.99373
1955	3.99344
1960	4.08502
1965	4.19152
1970	4.1548
1975	4.23106
1980	4.33081
1985	4.59563
1990	5.3898
1995	5.63598
2000	5.79916
2005	5.89863
2010	6.0721
2015	6.65368
2020	7.22758
2025	7.80336
2030	8.58857
2035	9.71759
2040	11.27359
2045	13.18929
2050	15.23818
2055	17.6411
2060	20.14817
2065	22.62463
2070	24.63585
2075	26.47609
2080	28.23611
2085	29.86603
2090	31.32645
2095	32.61353
2100	33.75837