2008 - 50,900 km
2012 - 149,000 km
2007 - 111,000 km
2009 - 97,700 km
2009 - 90,000 km
2008 - 115,000 km
2012 - 100,000 km
2011 - 100,000 km
2010 - 135,000 km
2008 - 42,000 km
2011 - 47,000 km
2012 - 120,000 km