Year	% of GDP
1970	2.359267280285722
1971	2.4013149443580812
1972	2.7987535694986017
1973	4.182743099436932
1974	10.478217557730082
1975	9.704909846035909
1976	10.50271445627347
1977	10.958915643558699
1978	10.308269743610182
1979	14.624309898283721
1980	15.623843949364918
1981	10.85586262864481
1982	9.429053777129278
1983	9.27973576923224
1984	8.713559793609127
1985	8.644796454135822
1986	5.026291148050579
1987	6.405917842699041
1988	5.991281878398055
1989	6.959800216226146
1990	7.7760131383316216
1991	4.8406169417683795
1992	4.622193185588557
1993	4.728235994461989
1994	4.146863659696107
1995	4.441719933788655
1996	4.686683811506749
1997	4.098644102624152
1998	2.872677554534563
1999	3.4065994030145736
2000	5.258460447151807
2001	4.561697777424465
2002	4.407774693479777
2003	4.59324229953317
2004	6.135425358505429
2005	7.380309030960743
2006	7.906479766811409
2007	7.963903738006915
2008	10.28682511736335
2009	5.480158775830653
2010	7.057043944166416
2011	8.475446906613382
2012	6.598101716050749
2013	5.517670392156425
2014	4.63116980503542
2015	2.5906647377230856
2016	2.3588855332051244
2017	2.928860815942629
2018	3.546460407107513
2019	2.9764996824820873
2020	2.0784581343332142
2021	3.952263756985276