Year	% of GDP
1990	16.591207828245945
1991	17.16417910447761
1992	17.971370686505697
1993	17.386135250658135
1994	16.774553300846122
1995	18.69849449543238
1996	18.023014525561216
1997	19.759965567507713
1998	20.417073348528707
1999	22.284377523799478
2000	25.527838653064194
2001	18.509060182142523
2002	18.371363873889564
2003	17.417939854309928
2004	17.754732944006637
2005	31.181839881262285
2006	27.812929555341793
2007	27.43054748744343
2008	25.666959194982468
2009	29.19708816998971
2010	25.44051480993636
2011	22.403111606165744
2014	24.65291907827011
2015	26.527550281421842
2016	24.204277762257604
2017	20.35174799157711
2018	21.971710553780717
2019	25.413327038429816
2020	35.346128014475056
2021	29.464821218997827