*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19811
19820
19830
19840
19850
19860
19870
19880
19890
19900
19910
19920
19930
19940
19950
19960
19970
19980
19990
20000
20010
20020
20031
20042
20052
20063
20071
20083
20092
201010
20116
20121
201314
20141
20151
20163
20171
20181
20191
20202
20210
20220
20230
20240
Total56