Year Percent change 1993 23.952 1994 -5.867 1995 33.105 1996 35.175 1997 -20.2 1998 0 2000 -0.572 2001 -8.071 2002 21.445 2003 15.223 2004 21.344 2005 10.516 2006 44.927 2007 36.873 2008 23.48 2009 -23.971 2010 -12.025 2011 6.541 2012 21.312 2013 22.48 2014 6.473 2015 -17.085 2016 2.651 2017 7.417 2018 3.094 2019 5.878 2020 2.842 2021 4.263 2022 4.6 2023 3.159 2024 0.989