47
        1       2       3       4       5       6       7       8       9       10      11      12
1961   1000   1000    1000    1000    1000    1000    1000    1000    1000    1000     1000   1000
1962   1000   1000    1000    1000    1000    1000    1000    1000    1000    1000     1000   1000
1963   1000   1000    1000    1000    1000    1000    1000    1000    1000    1000     1000   1000
1964   1000   1000    1000    1000    1000    1000    1000    1000    1000    1000     1000   1000
1965   1000   1000    1000    1000    1000    1000    1000    1000    1000    1000     1000   1000
1966   1000   1000    1000    1000    1000    1000    1000    1000    1000    1000     1000   1000
1967   1000   1000    1000    1000    1000    1000    1000    1000    1000    1000     1000   1000
1968   1000   1000    1000    1000    1000    1000    1000    1000    1000    1000     1000   1000
1969   1000   1000    1000    1000    1000    1000    1000    1000    1000    1000     1000   1000
1970   1000   1000    1000    1000    1000    1000    1000    1000    1000    1000     1000   1000
1971    31      32      73      17      40      26      33      1       46      51      81      45
1972    56      37      26      17      50      34      33      34      44      102     42      20
1973    36      71      55      53      28      38      51      23      19      70      52      46
1974    26      22      48      44      82      29      15      30      9       21      106     28
1975    81      43      54      70      54      57      17      256     0       160     91      63
1976    28      9       36      54      56      15      32      67      67      145     50      158
1977    129     38      32      59      15      53      26      6       169     22      52      60
1978    77      79      83      71      51      21      16      4       82      59      7       85
1979    103     94      6       81      28      97      37      46      18      237     177     26
1980    85      68      73      41      55      65      6       57      16      39      201     103
1981    153     45      45      128     57      1       36      11      23      51      146     138
1982    57      26      77      104     21      55      80      20      48      100     52      116
1983    45      70      6       10      21      58      44      4       7       68      29      101
1984    72      41      187     52      47      10      26      239     0       27      114     29
1985    86      60      26      41      14      30      2       35      19      44      90      28
1986    104     135     24      25      2       91      54      1       19      132     53      99
1987    105     33      30      69      42      14      39      56      12      166     86      76
1988    7       48      60      62      17      12      26      34      11      95      216     111
1989    2       5       72      14      79      47      13      35      38      76      48      92
1990    9       9       13      50      75      41      2       2       60      81      62      103