Annual Percent
1973-01-01 22.643400000000000
1974-01-01 24.531200000000000
1975-01-01 24.475900000000000
1976-01-01 21.681700000000000
1977-01-01 21.211300000000000
1978-01-01 23.642600000000000
1979-01-01 24.485400000000000
1980-01-01 25.108600000000000
1981-01-01 26.940500000000000
1982-01-01 30.184000000000000
1983-01-01 32.459300000000000
1984-01-01 34.137900000000000
1985-01-01 39.878200000000000
1986-01-01 38.855600000000000
1987-01-01 28.677700000000000
1988-01-01 30.118800000000000
1989-01-01 31.357500000000000
1990-01-01 25.376600000000000
1991-01-01 18.417600000000000
1992-01-01 18.934400000000000
1993-01-01 20.706100000000000
1994-01-01 26.463400000000000
1995-01-01 32.432800000000000
1996-01-01 36.530300000000000
1997-01-01 39.122100000000000
1998-01-01 40.918000000000000
1999-01-01 42.910900000000000
2000-01-01 45.417900000000000
2001-01-01 45.642100000000000
2002-01-01 43.265200000000000
2003-01-01 42.708900000000000
2004-01-01 44.146800000000000
2005-01-01 43.974000000000000
2006-01-01 43.608000000000004
2007-01-01 43.452700000000000
2008-01-01 44.277700000000000
2009-01-01 45.306800000000000
2010-01-01 43.061200000000000
2011-01-01 41.342800000000000
2012-01-01 41.640200000000000
2013-01-01 42.960500000000000
2014-01-01 43.947900000000000
2015-01-01 44.105200000000000
2016-01-01 45.933200000000000