Year % change from 1990 1991 0.785795904016884 1992 13.3145820515074 1993 8.12955963786588 1994 6.06135185022414 1995 4.09070932583282 1996 -0.968620901819461 1997 -2.83466643227565 1998 -3.41302628109345 1999 7.42814450206557 2000 0.988837127538011 2001 -1.20857871143535 2002 15.9013799771469 2003 14.8431045090973 2004 -4.18387975740531 2005 6.87527467697988 2006 6.17473850751515 2007 8.02408367759515 2008 9.36099147402654 2009 10.1837039641382 2010 10.8772084029182 2011 11.9859804869473 2012 13.0947525709765