Year	% of GDP
1970	-0.6712055008447315
1971	-0.33617662004525783
1972	-0.05140776150754078
1973	-0.39237477399986176
1974	-1.5170484262193114
1975	-0.7238138683896267
1976	-1.6850389571669204
1977	-1.221827198097948
1978	-0.31487504833906854
1979	-1.3203279216066264
1980	-2.9420367439077744
1981	-2.2084733480919603
1982	-1.9119211947062773
1983	-0.9796174280762919
1984	-0.4740592514621902
1985	-0.49761139886341965
1986	0.43394558931542093
1987	-0.1255879110102356
1988	-0.21358693509978366
1989	-0.5806686904264069
1990	-0.422767113292597
1991	-0.29260865029713656
1992	-0.08508232836509322
1993	1.2165577839433404
1994	1.3624212198157934
1995	1.6139736743458997
1996	1.7691649750702396
1997	2.0666292425677675
1998	1.7595105937056665
1999	1.2893508168785743
2000	0.7769065118916956
2001	1.447519814067384
2002	2.325429156586374
2003	1.894545311793273
2004	2.0902732212812083
2005	1.5733138093306565
2006	1.2118716166335233
2007	1.255030038183925
2008	0.8544761729946515
2009	1.6604328746564292
2010	1.591970036991654
2011	1.683260993370176
2012	2.8689641717395418
2013	3.505477806448596
2014	3.7584436706549553
2015	4.354835552906117
2016	4.352735438203794
2017	4.2444099214689
2018	3.8145399602474512
2019	3.481881709892626
2020	3.649319674201763
2021	3.8030461712607035
2022	1.8022291728497564
2023	3.731389701197436