2012 - 110,000 km
2016 - 50,000 km
2010 - 130,000 km
2016 - 100,000 km
2021 - 41,000 km
2013 - 89,000 km
2012 - 34,000 km
2013 - 90,000 km
2011 - 290,000 km
2012 - 990,000 km
2012 - 120,000 km
2010 - 89,000 km