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This paper describes the construction of the GTAP Data Base, version 11. The database reconciles different data sources at a global scale for analytical use and provides time series data on value flows, volumes, and various tax instruments. GTAP version 11 has 5 reference years (2004, 2007, 2011, 2014, and 2017), distinguishes 65 sectors in each of 141 countries and 19 aggregate regions - with individual countries accounting for 99.1% of world GDP and 96.4% of world population. The exhaustive nature of GTAP in its country and sector coverage facilitates its use in economy-wide studies of global economic issues.
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