*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19870
19880
19890
19900
19910
19923
19938
19945
199517
19964
19979
19980
19992
20000
20010
20023
20030
20041
20050
20060
20071
20080
20090
20101
20111
20120
20132
20141
20151
20161
20172
201810
20191
20200
20210
20224
20230
20240
Total78