Year	% of GDP
1990	31.151745660230155
1991	30.00166407810073
1992	29.052095666587736
1993	29.98479587433995
1994	27.015659186662567
1995	24.538637867854778
1996	25.7841111454516
1997	27.279535566981185
1998	24.07696447793326
1999	29.331120726761966
2000	30.04703260132706
2001	26.92309764050672
2002	22.09391274505598
2014	21.751149389294113
2015	20.22956706591653
2016	18.387511758963644
2017	16.582991808656008
2018	18.309911290552456
2019	19.14286595284678
2020	20.895915363337696
2021	19.831400441749047
2022	19.47580592382373