Year Percent change 1993 -9.2 1994 -12.58 1995 -8.2 1996 0.5 1997 1.7 1998 -1.9 1999 2.7 2000 9.8 2001 13.5 2002 9.8 2003 9.3 2004 9.6 2005 9.7 2006 10.7 2007 8.9 2008 3.3 2009 1.2 2010 7.3 2011 7.4 2012 4.8 2013 6 2014 4.2 2015 1.2 2016 1.1 2017 4.1 2018 4.1 2019 3.204 2020 3.208 2021 3.295 2022 3.307 2023 4.553 2024 4.472