*Excludes Observations that spanned multiple years

Pre 197034
19701
19710
19720
19730
19741
19750
19760
19775
19781
19790
19800
19810
19820
19830
19840
19850
19861
19870
19880
19890
19900
19911
19922
199311
19940
199550
199662
199759
19980
199975
20001
20010
20023
20033
20040
20050
20060
20070
20080
20090
20100
20110
20120
20130
20140
20150
20162
20170
20180
20191
20200
20210
20220
20230
20240
Total313