*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19731
19740
19750
19760
19770
19780
19790
19801
19810
19820
19830
19841
19850
19860
19870
19880
19891
19903
19910
19921
19930
19941
19953
19961
19970
19980
19991
20001
20010
20020
20030
20041
20050
20060
20071
20081
20090
20100
20110
20120
20130
20142
20150
20162
20171
20183
20199
20203
20219
20223
20233
20240
Total54