Year Percent change 1990 -1.672 1991 3.5 1992 5.411 1993 -1.008 1994 3.737 1995 9.17 1996 15.7 1997 3.457 1998 7.602 1999 1.398 2000 -5.207 2001 3.958 2002 20.679 2003 5.229 2004 6.632 2005 5.179 2006 5.049 2007 12.323 2008 25.24 2009 19.24 2010 0.655 2011 -4.102 2012 21.078 2013 2.06 2014 15.513 2015 7.852 2016 -6.167 2017 -4.696 2018 5.411 2019 -0.238 2020 4.88 2021 5.428 2022 5.03 2023 5.582 2024 5.999