Year Total 1985 23030000000 1986 24670000000 1987 28574000000 1988 32413000000 1989 37353000000 1990 44113000000 1991 50120000000 1992 57028000000 1993 63337000000 1994 71102000000 1995 79737000000 1996 86992000000 1997 92661000000 1998 89532999999.99998 1999 90215000000 2000 95521000000 2001 100990000000 2002 108440000000 2003 115930000000 2004 124130000000 2005 130430000000 2006 136770000000.00002 2007 142540000000 2008 145440000000 2009 145910000000 2010 157580000000 2011 153320000000 2012 168960000000 2013 168630000000 2014 173760000000 2015 177770000000 2016 179740000000