*Excludes Observations that spanned multiple years

Pre 19706
19700
19711
19720
19730
19740
19750
19760
19773
19784
19792
19800
19810
19823
19830
19843
19855
19860
19879
198816
19895
199012
19917
199228
199374
199417
199540
19965
19978
19989
19999
200016
20011
200214
200341
20046
20051
200611
20078
200865
200928
20103
20111
20122
201314
20140
20153
20163
20171
20182
20195
20200
20211
20220
20233
20240
Total495