*Excludes Observations that spanned multiple years

Pre 19704
19700
19713
19720
19731
19741
19751
19760
19770
19780
19790
19800
19810
19820
19832
19840
19850
198610
198742
198852
19894
199031
199156
199239
199351
199412
199557
19967
199779
19980
199949
200048
200115
200217
200312
200438
20053
20068
200726
200843
200948
201051
201134
201212
201329
201430
201545
201630
201732
201824
201916
202010
202151
202210
20234
20242
Total1139