*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19730
19740
19750
19760
19772
19780
19791
19800
19810
19823
19830
19840
19854
198620
198715
198882
198927
199016
199150
199217
199330
19941
199558
199614
19979
199818
199951
200067
200130
20026
20038
20045
200514
200610
200735
20089
200912
20107
20111
20121
20130
20146
20153
201617
20176
20189
201911
202010
202126
202220
202324
20246
Total762