14. Other Operating Expenses

Other Operating Expenses
in € thousand	2016	2015
Leasing costs	62,872	53,350
Consultancy, services, insurance and auditing expenses	34,778	32,820
External maintenance services	34,686	36,592
Venture expenses	4,566	1,528
Travel expenses, advertising and promotional costs	3,440	3,107
Other taxes	2,646	1,685
External and internal cleaning costs	2,270	2,043
Losses on the disposal of property, plant and equipment	1,800	527
Other personnel expenses	1,755	2,083
Postage and telecommunications costs	1,585	1,559
Expenses from exchange rate differences	1,319	2,471
Expenses from other accounting periods	546	1,701
Other	10,203	6,832
	162,466	146,298

Leasing expenses were largely responsible for the increase in other operating expenses. Detailed information is available in Note 45.