Year	% of GDP
1977	1.7923826101706386
1978	2.178349428469842
1979	2.282858722510803
1980	2.5838327687665332
1981	1.9949482553017648
1982	2.3616058791053764
1983	2.894317820255918
1984	2.8123672704243927
1985	2.4922420601105
1986	2.3927214877193967
1987	2.5686110334338257
1988	2.370893046625107
1989	2.327816622695578
1990	2.3915806432460474
1991	2.6395426527632395
1992	2.9961626005858433
1993	3.0552630998704906
1994	2.9403871256061964
1995	2.741484176749361
1996	2.6018297760121842
1997	2.9878418749483306
1998	2.6791054687159077
1999	3.362761458279323
2000	3.433430204452595
2001	3.7840609469439683
2002	4.3042741077214774
2003	4.544084653722967
2004	4.237786786468368
2005	4.8905765771159295
2006	4.972139125786134
2007	4.92253222140093
2008	5.418449191912841
2009	5.164539212381949
2010	4.8224584134232185
2011	4.964641811776862
2012	5.1669121790728285
2013	5.106309872867651
2014	4.978687573055411
2015	4.933710521217536
2016	4.594029629607289
2017	4.66760812438362
2018	4.817556008141531
2019	4.839298049906712
2020	5.041592073668629
2021	4.904203065238389
2022	5.066277767638612
2023	5.219068524636285