Please answer the given financial question based on the context.
Context: item 1b . unresolved staff comments item 2 . properties we employ a variety of assets in the management and operation of our rail business . our rail network covers 23 states in the western two-thirds of the u.s . our rail network includes 32084 route miles . we own 26064 miles and operate on the remainder pursuant to trackage rights or leases . the following table describes track miles at december 31 , 2015 and 2014. .
||2015|2014|
|route|32084|31974|
|other main line|7012|6943|
|passing lines and turnouts|3235|3197|
|switching and classification yard lines|9108|9058|
|total miles|51439|51172|
headquarters building we own our headquarters building in omaha , nebraska . the facility has 1.2 million square feet of space for approximately 4000 employees. .
Question: what percentage of total miles were other main line in 2014?
Answer:
0.13568