Year	Percent
1950	4.63285
1955	4.45549
1960	4.21413
1965	3.89943
1970	3.54901
1975	3.16032
1980	2.85809
1985	3.00944
1990	3.54976
1995	3.45651
2000	3.99989
2005	3.65277
2010	3.63679
2015	4.14179
2020	4.83965
2025	5.87757
2030	6.22901
2035	6.63262
2040	7.43838
2045	8.84378
2050	10.60737
2055	11.55912
2060	12.89284
2065	14.45779
2070	16.32182
2075	18.19635
2080	19.95944
2085	21.5926
2090	23.18542
2095	24.82537
2100	26.4667