116,000 km
1981
$24.100
121,000 km
2012
$10.400
73,000 km
2005
$5.500
190,000 km
2005
$19.700
152,000 km
1989
$25.300
39,000 km
2012
$31.000
20,000 km
2016
$58.100
208,000 km
1983
$14.400
27,000 km
1992
$27.700
89,000 km
2007
$7.200
76,000 km
2003
$9.000
75,000 km
1994
$21.400
120,000 km
2002
$26.500
66,000 km
2015
$43.900
41,000 km
2007
$8.100
57,000 km
1987
$28.000
91,000 km
1988
$18.400
62,000 km
2007
$7.600