*Excludes Observations that spanned multiple years

Pre 19708
19700
19711
19720
19730
19740
19750
19760
19773
19783
19794
19800
19810
19823
19830
19840
198511
198616
198723
1988169
198912
199024
199137
1992114
1993162
199443
1995123
199663
199752
19985
199982
200057
200157
200232
20036
200420
200540
200635
200749
200811
200915
20102
201118
201211
201316
201421
201514
201613
201712
20187
20198
202016
20212
20223
20231
20240
Total1424