Data from the ITU ICT Regulatory Tracker show that, in 2008, only 27 per cent of countries had an open telecommunication sector enabling investment, innovation and access, compared with 62 per cent of countries having progressed to such an enabling regulatory environment in 2017 (Chart 4.4). This testifies to the improvement in the regulatory and policy context of many ICT markets worldwide. The two vertical axes are scaled proportionally based on the 2008 values, so that a 10 per cent increase in subscription penetration on the right axis takes the same range as a 10 per cent decrease in prices on the left axis.