*Excludes Observations that spanned multiple years

Pre 19703
19700
19710
19720
19730
19740
19750
19760
19770
19780
19791
19800
19810
19820
19831
19840
19853
19861
19879
198819
19897
19901
19916
199212
199312
19942
199556
19963
19971
19980
199913
200025
200113
20024
20030
20040
20053
20064
20073
20089
20094
20103
20118
20122
20135
20141
20151
20163
20176
20189
20199
20201
20216
202223
20231
20240
Total293