Year % of GDP 1993 5.3914691170186115 1994 2.96007803983304 1995 1.485210086061744 1996 1.8415200202872568 1997 1.5739207536239193 1998 0.6339906654378339 1999 0.6059373081168477 2000 0.847300985044783 2001 1.3485989175334518 2002 1.5762923174549204 2011 1.772557976574552 2012 4.838223895790815 2013 0.4977494311135566 2014 0.9007701216224366 2015 4.319773944602474 2016 2.895341343196809 2017 2.3106242388126805 2018 3.576361372406278 2019 4.957877424670198 2020 0.32702447504992554 2022 1.0656366253909744