*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19740
19751
19760
19770
19780
19790
19800
19810
19820
19830
19842
19850
19860
19870
19882
19892
19900
19910
19924
19933
19940
19950
19960
19970
19981
19992
20005
200110
200210
200317
20048
200511
20061
20071
20081
20093
20100
20111
20121
20130
20141
20150
20160
20170
20181
20190
20200
20210
20220
20231
20240
Total91