Year	% of GDP
1990	17.12406015037594
1991	18.481404958677686
1992	18.424149605029825
1993	15.872929153343081
1994	14.585064935064935
1995	15.718043194194415
1996	16.517002257628253
1997	16.475266146384346
1998	16.569337117056495
1999	15.78825273940513
2000	20.427837166091553
2001	22.12898139013364
2002	21.42191421643508
2003	20.19285879104111
2004	21.32691800873263
2005	19.17120283225319
2006	20.183072512244653
2007	22.753688094848602
2008	25.839379112535855
2009	24.636174636174637
2010	23.141762101642822
2011	23.622211785792764
2012	23.445531740743043
2013	23.784247974161723
2014	23.491038244530742
2015	23.906618433717263
2016	24.444220277574626
2017	22.55794313596697
2018	20.031987749630037
2019	21.042237213848182
2020	21.591262251972267
2021	23.45542608421471