Year Percent change 1993 -13.005 1994 -19.807 1995 -5.424 1996 7.085 1997 9.915 1998 2.122 1999 3.656 2000 5.443 2001 5.322 2002 -0.017 2003 7.03 2004 7.027 2005 -0.176 2006 3.103 2007 8.543 2008 7.566 2009 2.886 2010 -0.472 2011 5.956 2012 -0.088 2013 10.915 2014 4.024 2015 3.876 2016 4.336 2017 4.74 2018 3.459 2019 3.759 2020 3.388 2021 3.779 2022 4.58 2023 3.354 2024 3.354