*Excludes Observations that spanned multiple years

Pre 19706
19700
19710
19720
19731
19740
19751
19760
19770
19780
19791
19801
19810
19820
19830
19841
19851
19862
198713
198814
19890
19903
19910
199224
199313
19947
199527
19960
19970
19981
199918
20009
20016
20026
20030
200439
20050
20062
20070
200818
20097
201020
201113
20121
20133
20141
20150
20164
20171
20184
201932
202024
202118
202221
20238
20240
Total371