Year annual % 1990 5.40244442726828 1991 5.87012984362545 1992 4.02355414884856 1993 3.30188453106945 1994 0.852360816018248 1995 1.79595371006631 1996 0.815420354165212 1997 0.514706284993991 1998 0.0146296875332581 1999 0.819192785901677 2000 1.55252192703072 2001 0.985855937188077 2002 0.650821388246285 2003 0.632556289875552 2004 0.810168671611081 2005 1.19056787026008 2006 1.31488166385525 2007 6.58173780950284 2008 -2.11669284164925 2009 -9.90066262743474