Year	% of GDP
1989	21.61631357064135
1990	18.375408317427862
1991	17.52674010996697
1992	18.474376138855867
1993	19.650454535283817
1994	20.54705500829145
1995	18.93057306488765
1996	18.667463297514814
1997	19.862386483088002
1998	20.213340419734312
1999	18.98839644573439
2000	19.08167715644121
2001	18.509349188295502
2002	18.316053015536774
2003	18.017017920355897
2004	18.52508163375348
2005	18.792835460295336
2006	19.43223114210089
2007	20.335258902185693
2008	21.09604609151488
2009	20.209520046579136
2010	20.45297367574448
2011	20.80017928122824
2012	21.066312037988165
2013	21.0132121904988
2014	20.511406464386358
2015	19.859712864460672
2016	18.63364347226115
2017	18.113562686066913
2018	18.74567346050089
2019	18.555203924782198
2020	17.857910682459174
2021	19.487235397876752
2022	19.891536716125792
2023	19.95659951563493