The table provides information about the percentage of GDP collected as tax in five countries in 1975, 1985, 1995 and 2005.
Overall, Sweden had the highest tax revenue as a percentage of GDP throughout the period, while the USA showed the most stable figures. All countries experienced an overall increase, although Turkey recorded a slight fall between 1975 and 1985.
In Sweden, the proportion of GDP collected as tax increased gradually from 46% in 1975 to 51% in 1995, before rising sharply to 70.1% in 2005. By comparison, the figure for the USA changed only slightly, from 25.1% to 27.4% over the same period. Its figures remained below 28% throughout the period.
Korea experienced a significant rise from 15.1% in 1975 to 27% in 1985. However, it fell slightly to 26% in 1995 before recovering to 27.3% in 2005. Japan followed a steady upward trend, with the figure increasing from 15% to 32.1%. Finally, Turkey was the only country to experience an initial decline, falling from 16.4% to 15% in 1985. It then rose considerably, reaching 24% in 1995 and 27.4% in 2005.
