Year Percent change 1996 0.408 1997 0.271 1998 0.135 1999 1.08 2000 4.806 2001 4.331 2002 4.518 2003 3.037 2004 2.381 2005 1.993 2006 3.04 2007 3.267 2008 1.327 2009 -2.518 2010 -0.207 2011 1.449 2012 1.735 2013 0.301 2014 -0.3 2015 0.301 2016 -0.2 2017 0.501 2018 0.798 2019 0.434 2020 1.5 2021 1.8 2022 1.95 2023 2 2024 2