Annual Percent of Total
1960-01-01 8.04706364754658
1961-01-01 8.12353850532696
1962-01-01 8.19709814953670
1963-01-01 8.26706926565086
1964-01-01 8.34116764727630
1965-01-01 8.42012760447812
1966-01-01 8.49735883891482
1967-01-01 8.57037198393119
1968-01-01 8.64029969599688
1969-01-01 8.70755641815283
1970-01-01 8.76894328510072
1971-01-01 8.86483041026037
1972-01-01 8.94349994521957
1973-01-01 9.01350475062731
1974-01-01 9.08179975227660
1975-01-01 9.16173705690833
1976-01-01 9.29270828131880
1977-01-01 9.43644102111884
1978-01-01 9.58643765335713
1979-01-01 9.73096332202580
1980-01-01 9.86585590242791
1981-01-01 9.93566399611557
1982-01-01 9.98975431797624
1983-01-01 10.03732750329420
1984-01-01 10.09095172691030
1985-01-01 10.16176701906600
1986-01-01 10.24921111115660
1987-01-01 10.34704682339230
1988-01-01 10.45140056695330
1989-01-01 10.55848945973460
1990-01-01 10.66643664009600
1991-01-01 10.79092010061170
1992-01-01 10.90482066184640
1993-01-01 11.01745248538010
1994-01-01 11.13156167731520
1995-01-01 11.24878096170440
1996-01-01 11.31704608550800
1997-01-01 11.40116387797980
1998-01-01 11.49308380797400
1999-01-01 11.56727966315180
2000-01-01 11.60982045750350
2001-01-01 11.67768913459190
2002-01-01 11.70438336096230
2003-01-01 11.71618880924600
2004-01-01 11.74666098713860
2005-01-01 11.80863722502280
2006-01-01 11.78668659584690
2007-01-01 11.78800786369590
2008-01-01 11.81759112723720
2009-01-01 11.88695481609440
2010-01-01 12.00519467545770
2011-01-01 12.26431429295830
2012-01-01 12.57933314082440
2013-01-01 12.93983102415990
2014-01-01 13.32190623487250
2015-01-01 13.71414382742400
2016-01-01 14.07538634600000
2017-01-01 14.43086336840530