Year	% of GDP
1981	21.40106674873092
1982	22.12625223576031
1983	23.063497846870902
1984	24.352972663164024
1985	24.30209297777814
1986	27.416098925479442
1987	28.87383553032429
1988	30.222168012978855
1989	30.070339144130315
1990	30.081800273748083
1991	30.888794034182553
1992	28.912756926983047
1993	27.577756831342764
1994	27.89304472538769
1995	27.605938140629714
1996	26.686470708631475
1997	27.580486808982883
1998	27.58037474269836
1999	25.797712359824477
2000	24.649873482786518
2001	24.418212113916894
2002	25.871074053144888
2003	25.05466977228503
2004	23.259870403795748
2005	22.942668737781744
2006	22.171560878663804
2007	22.243987003413295
2008	22.744100048552916
2009	23.306856963154164
2010	22.391361159623354
2011	21.763746694734035
2012	21.805602217084697
2013	20.954681681896243
2014	20.680902181136393
2015	20.92649277515999
2016	20.384639443780788
2017	20.058944565036665
2018	19.517618608008338
2019	19.459040779735485
2020	20.522903311392433
2021	19.943815695459435
2022	19.663149741302053
2023	19.4131667610801