*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19730
19740
19750
19760
19770
19780
19791
19802
19811
19820
19830
19840
19850
19860
19870
19880
19890
19900
19916
199214
19939
19942
19953
19962
19977
19980
19993
20000
20010
20020
20030
20040
20050
20061
20076
20082
20090
20101
20116
20121
20134
20141
20150
20162
201716
20181
20193
20200
20211
20224
20230
20240
Total100