Year Percent change 1993 -2.1 1994 4.9 1995 7.666 1996 3.039 1997 -1.196 1998 4.453 1999 -1.915 2000 0.886 2001 3.315 2002 8.651 2003 12.4 2004 10.5 2005 4.7 2006 4.9 2007 4.675 2008 0.85 2009 -2.525 2010 8.925 2011 -4.45 2012 -0.75 2013 4.15 2014 -0.15 2015 6.35 2016 2.55 2017 3.05 2018 6.065 2019 3.798 2020 4.004 2021 4.207 2022 4.3 2023 4.86 2024 4.743