# comment
"time_start","time_end","fleet","obs"
#1985,1986,1,994
#1986,1987,1,1319
#1987,1988,1,1980
#1988,1989,1,1239
#1989,1990,1,1161
1990,1991,1,1063
1991,1992,1,1227
1992,1993,1,1186
1993,1994,1,1255
1994,1995,1,1371
1995,1996,1,1835
1996,1997,1,3022
1997,1998,1,2620
1998,1999,1,2390
1999,2000,1,2670
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
2001.5,2001.5,2,1.00
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