Year % of GDP 1995 0.013918653347651197 1996 0.030718687356151162 1997 0.02893177697295827 1998 0.030472756503793563 1999 0.02729779050208567 2000 0.43334895397909473 2001 0.6467883504946811 2002 0.7661270838759625 2003 0.6114135970317257 2004 2.552171764631013 2005 2.8556998318243507 2006 3.294533653137784 2007 3.610003578641073 2008 3.2748735138897955 2009 3.3161446811816964 2010 4.506379964254799 2011 4.491588793750154 2012 3.5109986817895873 2013 4.427669714805351 2014 4.3541759922790995 2015 3.3131404413503955 2016 2.9733156202213364 2017 2.72736097599688 2018 2.580357343102964 2019 2.3790827306061635 2020 1.3878351627878076 2021 1.1648051183926935 2022 1.0363421983140704 2023 1.2548194311745542