Year	% of GDP
1988	31.11064931122019
1989	30.59299759765559
1990	29.736751385480776
1991	29.898799579576256
1992	34.120607846926944
1993	30.847042569726273
1994	33.92825808066585
1995	23.555397360483525
1996	19.495360902094454
1997	20.81466133392586
1998	21.16247281616585
1999	22.561070840673462
2000	17.185516717203036
2001	16.450578607129703
2002	15.846504464972144
2003	16.720141598204012
2004	15.850521418133741
2005	18.05301294203899
2006	17.716303487922975
2007	19.07510627190288
2008	18.432616164110573
2009	18.79346464355593
2010	20.232695087692857
2011	20.043118899015354
2012	19.469903594855527
2013	19.327499956926427
2014	17.829763647572644
2015	17.219898998961888
2016	17.98351398514613
2017	18.826470995019513
2018	18.7060141160075
2019	19.187403731504585
2020	20.36249373204397
2021	20.681428874755554
2022	20.275349314177173
2023	18.15397551672286