Year	% of GDP
1999	3.7553249597549447
2000	3.46928000450134
2002	3.13612997531891
2004	3.337610006332395
2005	3.39683997631073
2006	3.29747998714447
2007	3.41326999664307
2008	3.48452806472778
2009	4.0983099937439
2010	3.84397280216217
2011	4.221519947052
2012	3.95985817909241
2013	4.34481000900269
2014	4.41258001327515
2015	4.554854869842529
2016	4.62773990631104
2017	4.32368993759155
2018	4.30003976821899
2019	4.1851350069046
2020	4.44600009918213
2021	4.38600015640259
2022	4.69618535041809