Year	% of GDP
1995	3.81464004516602
1996	3.78422498703003
1998	4.13832998275757
1999	4.13379001617432
2000	3.85399007797241
2001	3.89494001865387
2002	4.0768449306488055
2003	4.20956993103027
2004	4.07934999465942
2005	3.979789972305295
2006	3.91671991348267
2007	4.20983982086182
2008	4.1646499633789045
2009	4.630249977111815
2010	4.200769901275635
2011	4.105550050735475
2012	4.0939998626709
2013	4.35383987426758
2014	4.511894941329955
2015	4.47038984298706
2016	4.259000062942505
2017	4.251499891281125
2018	4.13199996948242
2019	3.94811999797821
2020	4.4830000400543195
2021	3.98000001907349