Year	% of GDP
2000	4.50828123
2001	4.25330067
2002	4.38285255
2003	4.41762781
2004	4.29347467
2005	4.17605019
2006	3.94742203
2007	3.67491412
2008	3.900002
2009	4.34958458
2010	4.23068333
2011	4.34274387
2012	4.56584787
2013	4.71490669
2014	4.77790594
2015	4.93827963
2016	4.97955608
2017	5.06592178
2018	5.16790485
2019	5.3502779
2020	5.59359741
2021	5.38360548