Year annual % 1990 11.9957500830468 1991 14.6102588137357 1992 20.9081659658449 1993 18.3366424469186 1994 56.7078918049329 1995 15.963377388462 1996 9.97659004101597 1997 12.7269915008058 1998 14.1574176285167 1999 7.03140253670993 2000 11.0562 2001 13.2483298704949 2002 10.2209698640329 2003 17.9855214217412 2004 19.3029246947154 2005 10.072132103637 2006 13.5183157532254 2007 4.11225632167309 2008 12.6749391714258 2009 11.6014672379655 2010 7.39382346704139 2011 4.32073061328364 2012 8.20779379091175 2013 8.07714884191483 2014 2.21898603934831 2015 5.20596329822199 2016 15.7032145295515 2017 13.7798773975934 2018 6.5357588755091 2019 19.8003879006213 2020 18.6851861283427 2021 18.9602364056386 2022 30.2012918564443 2023 31.5119631462576