Year annual % 1990 10.6683038500875 1991 13.7518189408817 1992 8.96515236173758 1993 9.8617828547541 1994 9.98004476893246 1995 9.06270222432151 1996 7.57501828948823 1997 6.4762712593954 1998 8.01016752456401 1999 3.06839552293496 2000 3.64497015989629 2001 3.21561601727176 2002 3.71568377761413 2003 3.8677980853483 2004 5.72541322793228 2005 5.6219032632798 2006 8.40093821740371 2007 6.9444182524999 2008 9.19396962637209 2009 7.04036543564477 2010 10.5260308551661 2011 8.73357890620295 2012 7.93438747794598 2013 6.18650400082137 2014 3.33175691703343 2015 2.27958810848014 2016 3.2379749508663 2017 3.96925793349949 2018 3.88424027193912 2019 2.40551716110539 2020 4.81485791890125 2021 8.35490771485064 2022 6.7475130832006 2023 1.36646712940708