*Excludes Observations that spanned multiple years

Pre 19701
19700
19711
19720
19730
19740
19750
19760
19770
19780
19790
19801
19810
19820
19830
19842
19852
19862
19874
19884
19897
199010
199112
199214
199314
199410
199512
19967
19976
19980
19992
20005
20012
20021
200310
200418
20059
200610
200723
200813
20095
201011
201114
201211
201342
201411
201512
201619
20178
201813
20195
20201
20211
20222
20230
20240
Total357