Year	% of GDP
1997	0.278990000486374
1998	0.261779993772507
1999	0.310079991817474
2000	0.284020006656647
2001	0.362569987773895
2002	0.368050009012222
2003	0.326039999723434
2004	0.368180006742477
2005	0.360529989004135
2012	0.177729994058609
2017	0.354229986667633
2018	0.333869993686676
2019	0.35699000954628
2020	0.403239995241165
2021	0.368090003728867
2022	0.309009999036789