Fig. 1

Average price of indicator taxed beverages post SSB tax increases in Tonga in 2013, 2016 and 2017, compared to what was expected based on existing trends, 2009–2018. The SSB tax included soft drinks and flavoured milk in all years, and juice in 2017 only. Notes: Adjusted for autocorrelation, visitors, GDP per capita, season and exchange rate T$/US$. Dashed vertical lines indicate the timing of the tax changes