Year % of GDP 2005 57.66789633029662 2006 48.738934297366626 2007 44.12450765022825 2008 37.66765437364228 2009 29.284111549571083 2010 29.424364816740955 2011 33.23586237199324 2012 30.639078275497255 2013 26.306801992100077 2014 32.70924580324836 2015 28.797351480259266 2016 29.11592183160118 2017 32.9191496375731 2018 28.614645498481455 2019 34.26113438661725 2020 41.29469834566205 2021 38.100806390984474 2022 39.8847973512651