Year	% of GDP
1997	6.787220586762192
1998	7.294793896023311
1999	7.745369934374477
2000	10.22139507125962
2001	9.642300653237672
2002	12.134359783377137
2003	13.083237653072427
2004	13.90867796670342
2010	15.712380463649797
2011	18.257834210064694
2012	13.312098150159446
2013	16.030177764618685
2014	14.193432739718743
2015	9.835711552194102
2016	9.924250196529998
2017	10.303011375612416
2018	11.717799586587645
2019	11.786942740629968
2020	8.318809313828798
2021	9.447111363095493