# comment
"time_start","time_end","fleet","obs"
2000,2001,1,2407
2001,2002,1,2500
2002,2003,1,2622
2003,2004,1,3458
2004,2005,1,3731
2005,2006,1,4430
2006,2007,1,4377
2007,2008,1,4064
2008,2009,1,4107
2009,2010,1,3889
2010,2011,1,4563
2011,2012,1,3858
2012,2013,1,3987
2013,2014,1,4136
2014,2015,1,2682
2000.5,2000.5,2,1.05
2001.5,2001.5,2,1
2002.5,2002.5,2,1.02
2003.5,2003.5,2,1.11
2004.5,2004.5,2,1.11
2005.5,2005.5,2,0.98
2006.5,2006.5,2,1.02
2007.5,2007.5,2,1.23
2008.5,2008.5,2,1.25
2009.5,2009.5,2,1.79
2010.5,2010.5,2,1.61
2011.5,2011.5,2,1.46
2012.5,2012.5,2,1.44
2013.5,2013.5,2,1.22
2014.5,2014.5,2,0.99