*Excludes Observations that spanned multiple years

Pre 1970231
197028
197144
197231
197331
197437
197535
197643
197727
197833
197927
198037
198150
198242
198331
198430
198541
198633
198724
198838
198937
199046
199124
199263
199372
199455
1995105
1996100
1997107
199877
199953
200086
200162
200264
200333
200432
200530
200632
200718
200821
200945
201019
201154
201276
201368
201434
201537
201611
201714
20187
20199
20207
20210
20220
Total2391