NWR 1988 12   129.82
NWR 1989  1   135.64
NWR 1989  2   144.05
NWR 1989  3   145.64
NWR 1989  4   135.50
NWR 1989  5   129.41
NWR 1989  6   118.32
NWR 1989  7   119.08
NWR 1989  8   111.44
NWR 1989  9    95.42
NWR 1989 10   102.86
NWR 1989 11   116.69
NWR 1989 12   121.61
NWR 1990  1   134.59
NWR 1990  2   145.83
NWR 1990  3   141.53
NWR 1990  4   142.02
NWR 1990  5   130.39
NWR 1990  6   107.31
NWR 1990  7   102.90
NWR 1990  8    99.87
NWR 1990  9   105.45
NWR 1990 10   109.70
NWR 1990 11   106.46
NWR 1990 12   118.53
NWR 1991  1   131.40
NWR 1991  2   128.68
NWR 1991  3   143.59
NWR 1991  4   161.39
NWR 1991  5   136.00
NWR 1991  6   112.39
NWR 1991  7   105.34
NWR 1991  8    97.36
NWR 1991  9   101.85
NWR 1991 10   112.02
NWR 1991 11   121.11
NWR 1991 12   135.97
NWR 1992  1   144.76
NWR 1992  2   148.66
NWR 1992  3   159.91
NWR 1992  4   160.99
NWR 1992  5   137.91
NWR 1992  6   115.52
NWR 1992  7   106.86
NWR 1992  8   103.75
NWR 1992  9    94.95
NWR 1992 10   105.62
NWR 1992 11   119.33
NWR 1992 12   120.28
NWR 1993  1   126.91
NWR 1993  2   135.12
NWR 1993  3   148.34
NWR 1993  4   149.47
NWR 1993  5   127.86
NWR 1993  6   110.15