Year	% of GDP
1970	10.5736703872681
1971	8.93535995483398
1973	7.24023008346558
2001	2.90476989746094
2005	3.04632997512817
2006	3.51480007171631
2007	3.04366993904114
2009	3.24165010452271
2010	3.49770998954773
2012	3.56599998474121
2013	4.4689998626709
2014	4.01800012588501
2015	4.71405982971191
2016	3.26099991798401
2017	2.46259999275208
2018	2.4343900680542
2019	2.63095998764038
2020	2.59050011634827
2021	2.86999988555908