*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19740
19750
19760
19770
19780
19791
19800
19810
19820
19831
19842
19850
19860
19872
19883
19890
19901
19912
199214
19937
19947
199512
19968
19973
19982
19991
20001
20014
20022
20030
20049
20051
20061
20072
20080
20090
20104
20110
20122
20131
20140
201525
20161
20172
20182
201912
20200
20210
20220
Total137