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*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19721
19733
19740
19750
19760
19770
19781
19790
19800
19810
19820
19830
19842
19853
19862
19872
19885
198916
19905
199127
199218
199315
199426
199534
19968
199710
19981
19997
20003
20016
20023
200316
200417
200525
200628
200722
200825
200930
201042
201134
201267
201348
201424
201525
201630
201729
201825
201920
202011
20216
20227
20230
20240
Total729