*Excludes Observations that spanned multiple years

Pre 19700
19701
19712
19720
19730
19740
19750
19760
19770
19781
19791
19800
19810
19820
19830
19840
19853
19860
19871
198821
19890
199015
199187
19929
199320
19948
199527
19963
199724
19980
199930
200030
200130
20023
20032
20040
20051
20064
20073
20085
20097
20101
20114
20120
20132
20140
20150
20168
20173
20182
20194
20203
202112
202217
202315
20249
Total418