Year annual % 2005 31.3733025877534 2006 34.6952705997072 2007 18.1755656108597 2008 23.065612938798 2009 4.68438868976504 2010 15.0502688559001 2011 21.3169268542577 2012 15.2262941038638 2013 11.8875884481828 2014 6.1505055670642 2015 11.7800825029834 2016 8.17268112275132 2017 8.91435947913097 2018 9.82761701259191 2019 9.47001039253012 2020 10.6016203387167 2021 12.5972882566934 2022 10.4930409984424 2023 7.80497591927973