Year	% of GDP
1989	2.24926996231079
1990	2.13807010650635
1996	2.53282999992371
1997	2.45859003067017
1998	2.17590999603271
2004	3.56122994422913
2005	3.54625010490417
2006	3.00991988182068
2007	4.03342008590698
2008	4.18591022491455
2009	3.96076011657715
2010	4.54169988632202
2011	4.57800006866455
2012	4.23000001907349
2013	4.63800001144409
2014	3.38488006591797
2015	4.19500017166138
2016	4.10200023651123
2017	4.4305100440979
2018	3.69953989982605
2019	3.59699988365173
2020	3.23099994659424
2021	3.11500000953674
2022	3.23799991607666
2023	3.25999999046326