*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19734
19743
19750
19761
19771
19781
19796
19802
19815
19820
19831
19842
19854
19860
19870
19880
19891
19901
19912
19921
19938
19943
19950
19965
19970
19981
19996
20000
20010
20020
20030
20040
20050
20060
20070
20086
20090
20100
20111
20121
20132
2014171
2015857
20162
2017150
20185
201934
20200
Total1287