Deutsche Post DHL`s Mail Letters reached 8,555 mil in 2015. This is 3.68 % less than in the previous year.
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| Company | Unit | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 |
| Deutsche Post DHL | mil | 7,955 | 7,826 | 7,809 | 7,578 | 8,958 |
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