Year	% of GDP
1996	1.66231000423431
1998	1.5135600566864
2000	1.5731999874115
2002	1.74749004840851
2004	1.84902000427246
2006	2.18010997772217
2008	2.39995002746582
2010	2.37074995040894
2011	2.23483991622925
2013	2.17843008041382
2015	1.92070996761322
2017	1.87977004051208
2019	1.82892000675201