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*Excludes Observations that spanned multiple years

Pre 19706
19700
19710
19720
19730
19740
19752
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19874
19880
19890
19900
19914
19922
19931
19940
19951
19960
19971
19980
19990
20003
20010
20020
20032
20040
20050
20062
20071
20083
20093
20101
20112
20123
20134
20142
20151
20163
20170
20181
20192
20201
20211
20222
20231
20240
Total59