*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19741
19750
19760
19770
19780
19791
19800
19810
19821
19834
19841
19851
19860
19870
19882
19890
19902
19911
199221
19933
19944
199512
199611
199718
19981
19990
20000
20010
20020
20034
20040
20051
20064
20070
200818
20093
20106
201118
20122
201325
20143
20151
201611
20172
201810
201939
202043
202141
202246
202325
20242
Total390