| 年度（1月〜12月） Jan to Dec |
年度毎運転時間（H) total time / year (H) |
累計運転時間（H) total time (H) |
| 1974 | 540 | 540 |
| 1975 | 1014 | 1554 |
| 1976 | 1258 | 2812 |
| 1977 | 964 | 3776 |
| 1978 | 896 | 4672 |
| 1979 | 665 | 5337 |
| 1980 | 594 | 5931 |
| 1981 | 754 | 6685 |
| 1982 | 543 | 7228 |
| 1983 | 718 | 7946 |
| 1984 | 803 | 8749 |
| 1985 | 883 | 9632 |
| 1986 | 717 | 10349 |
| 1987 | 892 | 11241 |
| 1988 | 953 | 12194 |
| 1989 | 831 | 13025 |
| 1990 | 1015 | 14040 |
| 1991 | 1024 | 15064 |
| 1992 | 803 | 15867 |
| 1993 | 862 | 16729 |
| 1994 | 874 | 17603 |
| 1995 | 834 | 18437 |
| 1996 | 856 | 19293 |
| 1997 | 910 | 20203 |
| 1998 | 819 | 21022 |
| 1999 | 719 | 21741 |
| 2000 | 731 | 22472 |
| 2001 | 616 | 23088 |
| 2002 | 770 | 23858 |
| 2003 | 719 | 24577 |
| 2004 | 711 | 25288 |
| 2005 | 518 | 25806 |
| 2006 | 843 | 26649 |
| 2007 | 848 | 27497 |
| 2008 | 877 | 28374 |
| 2009 | 1024 | 29398 |
| 2010 | 872 | 30270 |
| 2011 | 910 | 31180 |
| 2012 | 1030 | 32210 |
| 2013 | 974 | 33184 |
| 2014 | 236 | 33420 |
| 2015 | 0 | 33420 |
| 2016 | 0 | 33420 |
| 2017 | 556 | 33976 |
| 2018 | 847 | 34823 |
| 2019 | 165 | 34988 |