*Excludes Observations that spanned multiple years

Pre 197011
19705
19711
19724
19733
19743
19752
19762
19771
19783
19797
19806
198112
198212
198319
198422
198528
198632
198724
198829
198925
199020
199118
199220
199318
199425
199539
199625
199749
199840
199938
200058
200155
200246
200351
200453
200566
200656
200752
200848
200959
201086
2011112
2012176
2013138
2014139
2015126
2016140
2017109
201898
201995
202075
202190
202258
20235
20240
Total2534