Year Total 1993 1700000000 1997 360100000 1998 7910000000 1999 9874000000 2000 11280000000 2001 10170000000 2002 10410000000 2003 12080000000 2004 11910000000 2005 11260000000 2006 13800000000 2007 8336000000 2008 7445000000