Occupied Houses Searched 1969-81
Jan
Feb
Mar
Apr
May
June
July
Aug
Sep
Oct
Nov
Dec
1969
-
1970
0
4
2
6
21
599
71
20
11
9
1971
179
173
150
252
333
335
145
349
1353
2579
1385
1972
1514
916
627
117
196
857
764
1572
1933
218
1829
822
1973
801
1570
1910
1539
1280
856
1215
1003
1504
1075
988
598
1974
1159
888
1890
1776
993
1032
1431
1573
2738
2237
2110
1749
1975
198
72
138
605
199
124
417
972
581
290
1976
431
568
694
915
1038
976
1314
1317
843
964
922
767
1977
830
682
747
1205
866
726
1046
892
737
565
580
388
1978
1270
667
643
441
509
484
583
274
249
344
247
1979
352
268
316
387
447
235
472
470
339
762
304
1980
1027
491
207
416
213
154
109
80
103
58
22
1981
76
45
115
377
259
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