Year	% of GDP
1979	1.98713004589081
1980	2.15950989723206
1984	2.37338995933533
1985	2.56679010391235
1986	3.1028299331665
1991	2.47907996177673
1992	2.41153001785278
1994	2.27171993255615
1995	2.521399974823
1996	2.86986994743347
1998	2.24337005615234
2000	2.42254996299744
2001	2.80096006393433
2002	2.32220005989075
2003	2.0682098865509
2004	2.49954009056091
2005	2.71475005149841
2006	2.85664010047913
2011	4.14937019348145
2012	4.0939998626709
2013	4.23892021179199
2014	4.26735019683838
2015	4.20636987686157
2016	4.36420011520386
2017	4.41787004470825
2018	4.61359977722168
2019	4.64130020141602
2020	4.54306983947754
2021	4.41334009170532
2022	4.36999988555908