Year	% of GDP
1988	0.881030023097992
1989	0.957520008087158
1992	0.913600027561188
1995	1.06456995010376
1996	1.082239985466
1997	1.21241998672485
1998	1.20882999897003
1999	1.19527995586395
2000	1.25536000728607
2004	1.2438600063324
2009	1.35459005832672
2010	1.31735002994537
2011	1.58989000320435
2012	1.78004002571106
2013	1.33440005779266
2014	1.02195000648499
2016	1.37092995643616
2017	1.45792996883392
2019	1.15890002250671
2021	1.4237300157547