*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19731
19743
19750
19760
19770
19780
19794
19801
19812
19822
19830
19841
19851
19860
19871
19881
19891
19900
19911
19922
19931
19943
19956
19961
19971
19980
19991
20001
20013
20023
20032
20042
20052
20065
20078
200811
20091
20108
20115
20128
20136
20148
20150
20165
20178
201810
201920
202010
202125
202211
20236
20246
Total209