Year Percent change 1993 -7.6 1994 -11.7 1995 -11.084 1996 2.776 1997 11.434 1998 8.442 1999 3.354 2000 5.76 2001 4.725 2002 5.045 2003 7.043 2004 11.45 2005 9.441 2006 9.998 2007 8.647 2008 10.248 2009 0.164 2010 7.75 2011 5.55 2012 1.708 2013 0.999 2014 1.651 2015 -3.83 2016 -2.526 2017 2.532 2018 3.031 2019 1.756 2020 2.245 2021 2.122 2022 1.951 2023 2.001 2024 1.998