The WM projection for the transport sector includes all measures, which were in use in the transport sector to cut down the emissions in the end of 2017. It is assumed that the use of biofuels is increased to at least 13.5 per cent in total of the road transport fuels sold in 2020 (without double-counting) and the growth in transport operations and annual mileages stays at a moderate level (0.5-1.5 per cent per year) (see also Section 4.2.2). The annual fluctuations in emissions from the transport sector are particularly explained by the annual fluctuation in the proportion of biofuels. The proportion of biofuels was at its highest in 2014 and 2015. In 2016, the proportion of biofuels decreased compared to previous years, whereas in 2017 the proportion of biofuels more than doubled compared to 2016. This fluctuation in the proportion of biofuels is a result of the legislation on the distribution obligation that enables front-loaded implementation of the distribution obligation.