Year	Percent
1950	5.98596
1955	5.71385
1960	5.5165
1965	5.26619
1970	4.95268
1975	4.56985
1980	4.2043
1985	3.92722
1990	4.1741
1995	4.15316
2000	3.9848
2005	3.74803
2010	3.80561
2015	4.11292
2020	4.49671
2025	4.96937
2030	5.6001
2035	6.53211
2040	7.76662
2045	9.19998
2050	10.61527
2055	11.79985
2060	13.21107
2065	14.75431
2070	16.41466
2075	17.90926
2080	19.37694
2085	20.83696
2090	22.30706
2095	23.76105
2100	25.1617