*Excludes Observations that spanned multiple years

Pre 19702
19701
19711
19720
19730
19740
19750
19760
19770
19781
19790
19801
19810
19820
19831
19840
19850
19860
19870
19880
19891
19900
199163
199215
199356
19948
19956
19961
19970
19980
19990
200023
20013
20021
20030
20040
20051
20061
20071
20081
20090
20104
20114
20120
20136
20141
20150
20162
20171
20187
20192
20202
20210
20224
202317
20240
Total238