*Excludes Observations that spanned multiple years

Pre 197030
19701
19710
19721
19736
197424
197531
197620
19776
197812
197911
19809
19818
19826
198316
198432
198521
198612
19879
19889
198913
199022
19916
19927
199316
199413
199520
199617
199710
199824
199928
200022
200127
200233
200337
200431
200528
200630
200730
200833
200947
201052
201162
201270
201353
201470
2015100
201646
20173
20181
20190
20201
20210
20220
Total1216