*Excludes Observations that spanned multiple years

Pre 19704
19701
19710
19720
19730
19740
19750
19760
19770
19780
19791
19800
19811
19820
19832
19840
19850
19860
19870
19880
19890
19900
19910
19921
19930
19940
19950
19961
19970
19980
19991
20001
20010
20020
20030
20041
20050
20060
20072
20080
20091
20101
20110
20121
20130
20140
20150
20160
20171
20181
20190
20203
20211
20222
20230
20240
Total27