2005 - 144,202 km
2010 - 128,300 km
2014 - 124,000 km
2014 - 124,000 km
2013 - 100,000 km
2015 - 95,000 km
2007 - 173,000 km
2008 - 110,000 km
2009 - 120,000 km
2015 - 90,000 km
2013 - 100,000 km
2008 - 150,000 km