*Excludes Observations that spanned multiple years

Pre 197018
19700
19710
19720
19730
19740
19751
19760
19770
19780
19790
19801
19810
19820
19830
19840
19852
19860
19875
198839
198921
199013
199139
199254
199329
199415
199576
19964
199727
19989
199915
200026
200113
20024
200312
20047
20055
200615
20073
200815
20098
20101
20111
20125
201311
20142
20154
20168
201710
201820
201936
202034
202133
202229
202361
202417
Total748