*Excludes Observations that spanned multiple years

Pre 197011
19700
19710
19721
19730
19741
19751
19760
19774
19780
19790
19800
19810
19820
19830
19840
19850
19860
19870
19880
19891
19900
19910
19920
19930
19943
19950
19960
19970
19980
19991
20001
20010
20020
20031
20040
20051
20060
20073
20082
20090
20101
20110
20123
20134
20140
20150
20161
20170
20180
20190
20200
20210
20222
20230
20240
Total42