*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19740
19750
19761
19770
19780
19790
19800
19810
19822
19831
19840
19850
19860
19870
19880
19890
19900
199132
19921
19935
19947
19950
19960
19970
19980
19992
20000
20010
20020
20031
20040
20052
20060
20070
20084
20090
20100
20110
20120
20130
20141
20150
20161
20171
20180
20192
20202
20212
20220
20235
20240
Total74