Year	% of GDP
1996	0.418260008096695
1997	0.465479999780655
1998	0.482230007648468
1999	0.536880016326904
2000	0.495169997215271
2001	0.447089999914169
2002	0.464729994535446
2003	0.472220003604889
2004	0.470860004425049
2005	0.442690014839172
2006	0.44216001033783
2007	0.430029988288879
2008	0.447310000658035
2009	0.493380010128021
2010	0.563069999217987
2011	0.529510021209717
2012	0.600359976291656
2013	0.634329974651337
2014	0.790050029754639
2015	0.949169993400574
2016	0.769760012626648
2017	0.739950001239777
2018	0.753790020942688
2019	0.832360029220581
2020	0.849240005016327
2021	0.772599995136261