*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19741
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19870
19880
19890
19900
19910
19921
19930
19940
19950
19961
19971
19980
19991
20000
20010
20020
20037
20040
20050
20060
20070
20084
20090
20100
20110
20120
20131
20141
20151
20160
20172
20184
20195
20205
20218
202216
202310
202410
Total79