*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19742
19750
19761
19772
19781
19792
19801
19811
19820
19831
19843
19852
19860
19870
19880
19890
19902
19912
19920
19932
19940
19953
19960
19970
19981
19993
20002
20010
20020
20030
20040
20050
20060
20071
20081
20092
20104
20113
20122
20132
20141
20150
20160
20173
20183
20194
20202
20213
20221
20234
20240
Total67