*Excludes Observations that spanned multiple years

Pre 197025
19701
19711
19721
19730
19741
19750
19761
19772
19780
19790
19801
19810
19823
19831
19840
19855
19867
19873
198827
19897
199018
199121
199244
199314
199414
199510
199615
19976
199815
19995
20008
20014
20020
200316
200417
200510
200614
20076
20088
200917
20108
201115
20126
20132
201413
20157
20163
20172
20187
201912
20204
20211
20221
20239
20241
Total439