Year	% of GDP
1997	0.6101201745826602
1998	0.462647499409776
1999	0.5236199359669749
2000	0.4969465124610678
2001	0.5375556634210622
2002	0.5371289134414546
2003	0.5024093764120866
2004	0.512795652520338
2005	0.5616170783898973
2006	0.5414630001570293
2007	0.6172530349208625
2008	0.6032876181815231
2009	0.669549896253055
2010	0.6500794830032525
2011	0.6234692529468316
2012	0.642560849223316
2013	0.6241276185220891
2014	0.632204330410518
2015	0.6548792536870739
2016	0.8181702565739764
2017	0.8336843628114369
2018	0.8555190691777128
2019	0.8559711913947684
2020	0.877928639222023
2021	0.8857747211116027