Annual Percent
1973-01-01 26.799700000000000
1974-01-01 27.733000000000000
1975-01-01 28.470500000000000
1976-01-01 28.200200000000000
1977-01-01 27.311400000000000
1978-01-01 29.316500000000000
1979-01-01 33.352900000000000
1980-01-01 37.209300000000000
1981-01-01 29.216300000000000
1982-01-01 20.326100000000000
1983-01-01 21.203000000000003
1984-01-01 21.501600000000000
1985-01-01 20.813800000000000
1986-01-01 19.084500000000000
1987-01-01 19.550500000000000
1988-01-01 19.211400000000000
1989-01-01 18.560900000000000
1990-01-01 18.374400000000000
1991-01-01 12.994500000000000
1992-01-01 11.980300000000000
1993-01-01 13.218100000000000
1994-01-01 14.252200000000000
1995-01-01 12.851300000000000
1996-01-01 13.879700000000000
1997-01-01 17.104900000000000
1998-01-01 19.781700000000000
1999-01-01 22.928700000000000
2000-01-01 26.371100000000000
2001-01-01 29.519800000000000
2002-01-01 32.496300000000000
2003-01-01 35.014400000000000
2004-01-01 37.587900000000000
2005-01-01 39.688200000000000
2006-01-01 39.504000000000000
2007-01-01 41.474400000000000
2008-01-01 46.461700000000000
2009-01-01 50.006000000000000
2010-01-01 48.513900000000000
2011-01-01 48.881500000000000
2012-01-01 50.506600000000000
2013-01-01 54.074000000000000
2014-01-01 56.630500000000000
2015-01-01 60.063800000000000
2016-01-01 63.692000000000000