Year NDay Positions each day
1978   4   61  61  61  61  61
1979   4  999 999 999 999 999
1980   4   70  69  71  72  73
1981   4   74  75  75  74  74
1982   4   78  76  75  75  76
1983   4  999 999 999 999 999
1984   4  999 999 999 999 999
1985   4   81  85  83  82  81
1986   4   72  71  70  70  69
1987   4   68  67  66  65  64
1988   4   64  63  62  59  58
1989   4   58  57  56  55  54
1990   4  999 999 999 999 999
1991   4   54  56  61  67  73
1992   4   69  68  66  65  64
1993   4  999 999 999 999 999
1994   4  999 999 999 999 999
1995   4  999 999 999 999 999
1996   4  999 999 999 999 999
1997   4   84  85  84  84  83
1998   4  999 999 999 999 999
1999   4  999 999 999 999 999
2001   4  999 999 999 999 999
2003   4  999 999 999 999 999
2004   4  999 999 999 999 999
2005   4   68  67  67  66  66
2006   4   63  62  60  59  59
2008   4   57  56  55  54  53
2009   4   54  55  58  61  62
2010   4   61  61  61  62  62
2011   4  999 999 999 999 999
2012   4  999 999 999 999 999
2013   4  999 999 999 999 999
2015   4   73  71  72  73  72
2016   0   67