Year	% of GDP
1996	0.639050006866455
1997	0.686689972877502
1998	0.703790009021759
1999	0.724129974842072
2000	0.756990015506744
2001	0.735909998416901
2002	0.725669980049133
2003	0.719290018081665
2004	0.756900012493134
2005	0.824109971523285
2006	0.804729998111725
2007	0.805069983005524
2008	0.858759999275208
2009	0.833140015602112
2010	0.788489997386932
2011	0.755020022392273
2012	0.743990004062653
2013	0.706420004367828
2014	0.701590001583099
2015	0.693099975585938
2016	0.669839978218079
2017	0.666029989719391
2018	0.660009980201721
2019	0.659420013427734
2020	0.646359980106354