Year Percent change 1993 -60.379 1994 -16.819 1995 -7.459 1996 -0.659 1997 8.228 1998 19.393 1999 13.442 2000 15.644 2001 32.604 2002 8.232 2003 -1.128 2004 10.846 2005 47.954 2006 41.913 2007 47.554 2008 7.598 2009 4.072 2010 -1.155 2011 0.22 2012 -5.779 2013 -1.502 2014 -4.257 2015 -1.682 2016 -0.995 2017 -5.617 2018 -0.018 2019 8.361 2020 8.918 2021 1.001 2022 -2.128 2023 -1.793 2024 -2.725