Year	% of GDP
1990	20.407976001411683
1991	19.01507175784031
1992	19.925451749057174
1993	17.961583596924978
1994	19.130004575611988
1995	18.25942877782252
1996	17.148118130396213
1997	16.71126273875799
1998	16.65877396402737
1999	17.592724371507856
2001	17.45585659224098
2002	15.73520420844968
2003	15.33467688268596
2004	15.71607471001567
2005	15.197796170915009
2006	14.233456795910834
2007	15.225192152470335
2008	14.999425543612238
2009	13.20582219899923
2010	14.362587618045511
2011	17.468377060289185
2012	16.66808929910012
2013	16.236209368866923
2014	17.73763416400783
2015	18.295771644826893
2016	18.132435746744534
2017	16.851212400577456
2018	19.410962485358855
2019	19.59610455890774
2020	19.581389154579163
2021	21.967397751802107