Year Percent change 1995 28.871 1996 12.939 1997 10.967 1998 5.124 1999 3.669 2000 5.036 2001 4.208 2002 2.703 2003 1.19 2004 4.799 2005 3.663 2006 5.101 2007 9.734 2008 7.536 2009 -1.873 2010 5.421 2011 4.087 2012 3.638 2013 2.049 2014 0.061 2015 -0.171 2016 2.353 2017 3.76 2018 3.319 2019 3 2020 2.8 2021 2.6 2022 2.5 2023 2.5 2024 2.5