Year Percent of GDP 2010-01-01 0.0264435322939144 2011-01-01 0.0428473228828883 2012-01-01 0.0436316611699358 2013-01-01 0.0396552198937020 2014-01-01 0.0441990471731887 2015-01-01 0.0444744306446727