Year	% of GDP
1961	0.6134969325153374
1962	0.4975124378109453
1963	0.46728971962616817
1964	0.4524886877828055
1965	0.4424778761061947
1966	0.4132231404958678
1967	0.25773195876288657
1968	0.12706480304955528
1969	0.1
1970	0.18726591760299627
1971	0.15987210231814547
1998	4.68223937220272
1999	4.379170156051756
2000	5.726783355312641
2001	8.783519974384749
2002	8.633598745763933
2003	8.87194678900653
2004	8.619664731133296
2005	8.62058050280504
2006	11.26656475884326
2007	10.754311916940114
2008	10.484521906975003
2009	11.578164892979192
2010	10.04561824729892
2011	10.464530938525662
2012	9.93224968534933
2013	9.407930503984916
2014	8.631196202318561
2015	8.916115687460142
2016	7.914286703361374
2017	8.4951784209409
2018	9.09106412005457
2019	8.02929792022304
2020	8.356145702052018
2021	9.12402521991914
2022	10.496126070547248