*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19730
19741
19750
19761
19770
19780
19793
19800
19811
19822
19832
19840
19850
19860
19871
19881
19890
19900
19911
19924
19936
19940
19952
19963
19970
19980
19992
20000
20011
20020
20030
20040
20050
20061
20070
20080
20090
20100
20110
20121
20130
20140
20150
20160
20170
20180
20192
20200
20210
20220
20230
20240
Total36