Year	% of GDP
1988	24.29754550261605
1989	24.494326543476355
1990	23.739230090607883
1991	25.289710719402102
1992	29.269437355092524
1993	31.012777050519507
1994	31.98412823573293
1995	33.654677588937595
1996	32.280671139217354
1997	31.374064753531428
1998	31.523496469068945
1999	31.784978254911262
2000	31.00789148967146
2001	31.705741255202362
2002	31.961813160370134
2003	31.864461653812338
2004	34.01884704365347
2005	36.16597493346021
2006	36.40685268676434
2007	37.47503583390699
2008	38.048780386748774
2009	33.675742291233114
2010	34.04424012945049
2011	35.978064402488656
2012	37.7834581640533
2013	37.01046864048681
2014	35.119844777184085
2015	33.30631986265655
2016	30.225403381037687
2017	30.505238207827112
2018	32.23933865803601
2019	30.873441842821634
2020	27.617996291749098
2021	30.472210855990213
2022	34.0398681921083
2023	29.9094327617675