Year % of GDP 1997 0.992336343973077 1998 1.0758723921788755 1999 1.122447005410704 2011 0.3123578107346872 2012 0.3543093026527618 2013 0.3610916448059327 2014 0.34630123337543617 2015 0.05584106913275736 2016 0.042056449990283004 2017 0.06562139819123357 2018 0.05863886269607593 2019 0.9722383894816732 2020 0.6820882744790577 2021 0.5352436687002126 2022 0.5735653334092732