*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19740
19750
19760
19771
19780
19790
19802
19810
19820
19831
19841
19850
19860
19872
19880
19891
19901
19911
19920
19931
19941
19952
199611
19972
19981
19994
20000
20010
20020
20030
20043
20050
20063
20071
20080
20090
20100
20110
20121
20134
20140
20150
20161
20171
20181
20190
20200
20210
20220
20230
20240
Total49