Annual Percent
1975-01-01 16032500000
1976-01-01 16830250000
1977-01-01 16726000000
1978-01-01 16996500000
1979-01-01 17887250000
1980-01-01 18321500000
1981-01-01 18834000000
1982-01-01 18355500000
1983-01-01 17214750000
1984-01-01 18184000000
1985-01-01 18847000000
1986-01-01 18778750000
1987-01-01 19896750000
1988-01-01 21136250000
1989-01-01 21585250000
1990-01-01 21319000000
1991-01-01 20566750000
1992-01-01 20342750000
1993-01-01 21223750000
1994-01-01 22189250000
1995-01-01 22239500000
1996-01-01 22952750000
1997-01-01 23348750000
1998-01-01 24153500000
1999-01-01 24342000000
2000-01-01 25309750000
2001-01-01 25312750000
2002-01-01 26463250000
2003-01-01 27174250000
2004-01-01 27261750000
2005-01-01 26963750000
2006-01-01 27118000000
2007-01-01 27647500000
2008-01-01 28531000000
2009-01-01 26462000000
2010-01-01 27307500000
2011-01-01 27356000000
2012-01-01 26840000000
2013-01-01 26264250000
2014-01-01 25895000000
2015-01-01 25537000000
2016-01-01 24866000000
2017-01-01 25074250000