2016 - 92,465 km
2013 - 38,000 km
2016 - 37,000 km
2011 - 100,000 km
2016 - 190,000 km
2012 - 100,000 km
2007 - 96,000 km
2018 - 68,000 km
2016 - 53,000 km
2016 - 90,000 km
2016 - 60,000 km
2016 - 95,000 km