Spills - Sabotage - Volume in thousand tonnes (2008: 6.5; 2009: 14.0; 2010: 3.0; 2011: 1.6; 2012: 3.3; 2013: 2.2; 2014: 2.7; 2015: 2.3; 2016: 3.9; 2017: 1.4) and number of spills (line chart)