Year	% of GDP
1997	20.724985853757826
1998	22.887696479797274
1999	26.170174466355505
2000	43.44801862225691
2001	29.708698054604643
2002	15.230228850691024
2003	16.739172413366948
2004	20.75498784664993
2005	26.389763950919328
2006	26.204004283104908
2007	31.744613770858717
2008	36.75065233318687
2009	40.07000016873432
2010	47.08207728876063
2011	44.798969156927676
2012	46.50588643285447
2013	40.92640051798503
2014	40.76719692127132
2015	40.61801654518249
2016	40.863676735961654
2017	40.26340527281948
2018	41.38858132186351
2019	41.98454872784873
2020	45.443096312268885
2021	43.39152392456898
2022	40.30421594861563
2023	35.70889181735746