*Excludes Observations that spanned multiple years

Pre 19702
19700
19711
19720
19730
19740
19750
19760
19770
19780
19790
19800
19811
19821
19830
19840
198545
198610
198739
198825
198914
19905
199135
199219
199313
199428
199581
199627
199748
199818
199920
200030
200152
200214
200324
200419
200515
200611
20078
200814
200914
201014
201114
201213
201321
201416
201510
201618
201711
201816
201914
20209
202123
202213
20232
20242
Total829