*Excludes Observations that spanned multiple years

Pre 19707
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19842
19852
19861
19874
198810
19893
199011
19912
19927
19931
19943
19954
19960
19972
19980
19990
20000
20010
20020
20034
20042
20051
20061
20070
20082
20091
20100
20115
20122
20134
20142
20151
20160
20170
20182
20190
20203
20216
20220
20230
20240
Total95