*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19741
19753
19761
19771
19781
19790
19800
19812
19820
19832
19841
19853
19861
198710
19884
19898
19908
199116
199226
199370
199424
199534
19969
199717
19984
19993
20003
20018
20024
20034
20048
20053
20065
200738
200820
200910
20101
201111
201213
20139
201411
20158
20169
201711
20184
201915
202011
202115
202230
202312
20244
Total518