*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19730
19741
19751
19760
19770
19780
19791
19800
19810
19820
19830
19842
19854
19862
19870
19881
19893
199011
199127
1992116
199341
19947
199577
19962
19970
199823
199923
200010
200141
200221
200321
200469
20053
20064
200718
200813
200916
201011
20119
201212
201312
20149
201510
201618
201717
201851
201977
202059
202126
202253
202382
20246
Total1011