Year Percent change 1993 -23.098 1994 -19.673 1995 -13.027 1996 2.531 1997 8.884 1998 6.007 1999 11.396 2000 6.227 2001 6.486 2002 9.439 2003 10.208 2004 9.254 2005 27.962 2006 34.466 2007 25.463 2008 10.591 2009 9.37 2010 4.789 2011 -1.573 2012 2.203 2013 5.843 2014 2.798 2015 1.05 2016 -3.064 2017 0.107 2018 1.352 2019 3.381 2020 3.075 2021 2.097 2022 1.573 2023 1.495 2024 1.659