*Excludes Observations that spanned multiple years

Pre 19706
19700
19713
19720
19730
19740
19752
19760
19770
19780
19790
19800
19810
19822
19831
19842
198510
19860
19874
198839
19893
199013
199182
199279
199345
19946
199586
199628
199729
199817
199963
200046
200142
20027
20030
20044
20055
20067
20072
20083
20095
20100
20118
20123
20132
20143
20154
201614
20171
20182
20199
20206
20212
202221
202310
20243
Total729