*Excludes Observations that spanned multiple years

Pre 197011
19700
19711
197211
19730
19740
19750
19762
19771
19780
19790
19800
19810
19820
19830
19840
19853
19867
19875
19881
19892
199014
19912
19926
19933
19942
19950
199612
19971
19982
19991
20000
20010
20024
20030
20040
20052
20060
20071
20087
20096
20102
20110
20120
20131
20144
20151
201619
20170
201815
20193
202016
20213
20223
20230
20240
Total174