*Excludes Observations that spanned multiple years

Pre 19705
19700
19710
19720
19730
19740
19750
19761
19770
19780
19790
19800
19810
19820
19838
19840
19850
19863
19872
19881
19890
199013
19918
199291
19931
19942
199512
19960
19970
19980
19990
20000
200115
20023
200310
200494
20050
20061
20070
20080
20090
20100
20110
20120
20130
20141
20150
20160
20171
20181
20190
20200
20210
20221
20235
20240
Total279