Year	% of GDP
1977	22.138130760976516
1978	20.998233781322366
1979	22.869164516428924
1980	32.37694031910629
1981	30.725210517764605
1982	28.21603967812986
1983	28.416093242464633
1984	26.91728615858451
1985	28.109687277283125
1986	28.788580927731367
1987	27.225997736005013
1988	26.79922153335323
1989	26.322682258174236
1990	27.707633564175882
1991	29.20982029493791
1992	26.65642851580331
1993	25.906949905662174
1994	26.361170371898158
1995	27.261863263539375
1996	26.635951554197796
1997	28.34334466320988
1998	26.658922945993872
1999	24.25918234412307
2000	25.69221760362285
2001	24.895190081943124
2002	27.69135020816495
2003	28.124034521093105
2004	28.3666936943327
2005	30.823736321623485
2006	31.589711249401603
2007	34.21724927838742
2008	34.35855571406847
2009	30.209131106220273
2010	32.81421748067434
2011	37.42407904569769
2012	35.569890451821315
2013	34.96257667231726
2014	32.80797413534076
2015	30.8536598892993
2016	29.45330311447355
2017	28.948997777829575
2018	27.870743943280594
2019	27.050710300994513
2020	19.98551425300637
2021	21.938976887608806
2022	27.242126211791344
2023	28.096709078114806