Year	% of GDP
1981	4.288250112111121
1982	4.165093023470158
1983	4.0290343947854055
1984	4.828623256251353
1985	3.9611050790530276
1986	4.290016323717972
1987	5.02079550348614
1988	4.7530775817315885
1989	4.715757947294976
1990	4.512588068947499
1991	3.142602234718487
1992	3.0377164853531453
1993	3.8501623039896335
1994	4.1695845948169845
1995	4.767187976217313
1996	5.085479803610479
1997	7.123356737656813
1998	5.128905343737066
1999	5.594196084943932
2000	5.605245150460473
2001	5.776228138710006
2002	5.766490583388084
2003	5.77003750137346
2004	5.350705610623162
2005	4.842961246062076
2006	4.637738366033766
2007	4.579682467896914
2008	4.108135336337515
2009	3.8802557957888806
2010	3.9739061201456267
2011	3.682551395593862
2012	3.4200607188961203
2013	3.7021890030560027
2014	3.9913252457657125
2015	4.404619138762705
2016	5.691398810150138
2017	6.186588505150083
2018	5.827616844709905
2019	5.594368895523964
2020	5.303280868165821
2021	4.605688703863421
2022	4.241062446656374
2023	4.479422155236894