Year % of GDP 1996 1.4013536435791083 1997 2.1248073838517496 1998 2.7983134443940747 1999 2.461752998963275 2000 2.6304554890353873 2001 1.970870923237991 2002 2.6025652079499806 2003 3.083938908112079 2004 3.719383504585849 2005 3.5211406564056706 2006 3.79586172862875 2007 4.623300482592558 2008 2.782942347896561 2009 2.754095834944355 2010 3.835478962643763 2011 2.0791532884655566 2012 0.9584426114120406 2013 0.8897854158088633 2014 0.7423220496276375 2015 3.0702796590698034 2016 3.938091284048031 2017 4.120369662838009 2018 3.516618174682878 2019 3.450766114453291 2020 2.967586622601676 2021 3.903473089186042 2022 2.1209640548232995 2023 3.5768474959134497