*Excludes Observations that spanned multiple years

Pre 19702
19701
19710
19720
19731
19740
19751
19760
19774
19782
19791
19804
19814
19820
19830
19840
19854
19866
198710
198861
19897
199019
1991144
1992173
1993117
199438
1995103
199651
199726
19987
199956
200049
200161
200212
200311
200419
200512
200630
200719
200818
200911
201036
201145
201210
201316
201410
201513
201640
201726
201829
201941
20200
20210
20220
Total1350