Year	% of GDP
1997	2.1394979573158968
1998	2.167374239664703
1999	2.1962125849648335
2000	2.09165300710719
2001	2.117890671757526
2002	1.9876232211626665
2003	2.053091392493437
2004	2.1678131110918124
2005	1.8803114578006195
2006	1.7010184594948197
2007	1.5871607317165928
2008	1.7682735480133251
2009	1.5498932753953012
2010	1.4932360811166077
2011	1.7656644662562715
2012	1.8113457439094136
2013	1.894231512278361
2014	1.5865480774195357
2015	1.8698359459858667
2016	1.8622258931352882
2017	1.8899946324488788
2018	1.6998915762240614
2019	1.697079353361028
2020	1.8397893111812245