*Excludes Observations that spanned multiple years

Pre 19700
19701
19710
19720
19731
19741
19751
197624
197720
19780
19793
19802
198131
19821
19833
19841
19853
19860
19875
19883
19893
19900
19912
199241
199340
19943
19955
199621
199787
19981
19993
20001
200190
20024
200366
20045
200519
200667
20071
20087
200919
201058
201189
201218
2013105
2014113
2015174
2016177
2017234
2018365
2019338
2020734
20212
20220
Total2992