Year	% of GDP
1988	56.98477100560646
1989	53.63077774814607
1990	55.91640668294389
1991	54.821515734913504
1992	51.355364353818686
1993	53.1766467571591
1994	54.77787657308204
1995	56.73153054802367
1996	57.32836075096297
1997	57.2577635977767
1998	56.96531145930523
1999	55.403981139062886
2000	54.39565786035142
2001	53.64346805941138
2002	52.878670449399735
2003	51.45594132077838
2004	50.30634351420149
2005	49.74550942622336
2006	48.49351546806603
2007	47.81276571596527
2008	47.11377598701239
2009	47.3309478499176
2010	45.78706166234319
2011	45.36855134242187
2012	45.197072280434305
2013	45.39422331347946
2014	45.660517454856475
2015	45.0493851300274
2016	45.63655041652833
2017	45.674381749987084
2018	44.97963045526593
2019	45.518626366150116
2020	44.12903148648065
2021	43.522041776720165
2022	43.262986090236616