*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19801
19811
19820
19830
19840
19850
19860
19870
19880
19890
19902
19910
19921
19930
19940
19950
19961
19971
19981
19990
20000
20010
20020
20030
20040
20050
20060
20070
20080
20090
20100
20116
20120
20131
201462
20153
20160
20172
201815
201910
20207
20210
20220
20230
20240
Total115