The table below shows data availability for the GTA, UNCTAD NTMTRAINS, and WTO Notifications database. The data are split out by country, MAST Chapter, and year. For the GTA and WTO Notifications, the year variable represents the date of enforcement where available, and otherwise the date of announcement. For each database the number of measures (Nr) and HS2012 6-digit lines affected (HS) are shown. The sum of the lines affected has been used as a metric in the map above. Furthermore, in case of the WTO notifications, the imputed dataset of Ghodsi et al. (2017) has been used.