Year annual % 1990 3.74332909937958 1991 3.3818113361103 1992 2.27885434592147 1993 2.37032483639894 1994 2.13519841812374 1995 2.09668848657614 1996 1.83076455933455 1997 1.72444795356148 1998 1.12386562495534 1999 1.41509811709537 2000 2.26519517669861 2001 2.25168991597403 2002 1.55399465961345 2003 1.9743147047601 2004 2.68908760322005 2005 3.13545455674655 2006 3.08383673352866 2007 2.70925848658695 2008 1.92670969899538 2009 0.61678071512577 2010 1.21528668186946 2011 2.06310947543149 2012 1.8621649281277 2013 1.70188036067233 2014 1.74161805258845 2015 0.928042794757729 2016 0.950322479212474 2017 1.79080328454668 2018 2.29089027511688 2019 1.67850787434747 2020 1.3206183953191 2021 4.584745358897 2022 7.04102594330236 2023 3.64499524971842