Year % of GDP 2005 0 2006 0.23745692573366017 2007 0.2335653927137834 2008 0.26936491572646937 2009 0.365548040753329 2010 0.4943924442269128 2011 0.5396363596466587 2012 0.9354252450456754 2013 0.6170037227149268 2014 0.6947031748719351 2015 0.9121683728553898 2016 1.478581199015761 2017 1.6652977515204714 2018 2.250908206561791 2019 2.0711008723041915 2020 3.3949806863460594 2021 2.649783087130925 2022 3.3108666095293344