Year	% of GDP
1996	2.162316065661467
1997	2.1911048746639
1998	2.194236660780877
1999	2.2621842766479054
2000	2.3216295446942445
2001	2.3536187489402107
2002	2.297986762625547
2003	2.2864973270193283
2004	2.2373709408705933
2005	2.2584407926394277
2006	2.288623490758098
2007	2.3016651370057617
2008	2.3843321800673674
2009	2.4528404881526256
2010	2.4231239129370965
2011	2.452724267915211
2012	2.4727879021820938
2013	2.4658925617444964
2014	2.551955187912962
2015	2.5720400175112994
2016	2.6193978178346273
2017	2.642290508165883
2018	2.752719134330843
2019	2.8148192714471727
2020	3.0432335720915695
2021	3.0247622811855264