# comment
"time_start","time_end","fleet","obs"
2000,2001,1,2362
2001,2002,1,2309
2002,2003,1,2392
2003,2004,1,2616
2004,2005,1,2380
2005,2006,1,2796
2006,2007,1,2877
2007,2008,1,2769
2008,2009,1,2745
2009,2010,1,2279
2010,2011,1,2231
2011,2012,1,2576
2012,2013,1,2554
2013,2014,1,2685
2014,2015,1,2991
2000.5,2000.5,2,1.66
2001.5,2001.5,2,1.84
2002.5,2002.5,2,1.27
2003.5,2003.5,2,1.37
2004.5,2004.5,2,1.55
2005.5,2005.5,2,0.86
2006.5,2006.5,2,0.85
2007.5,2007.5,2,1.18
2008.5,2008.5,2,0.93
2009.5,2009.5,2,1.2
2010.5,2010.5,2,1.19
2011.5,2011.5,2,1.2
2012.5,2012.5,2,1.3
2013.5,2013.5,2,1.52
2014.5,2014.5,2,1.61