*Excludes Observations that spanned multiple years

Pre 1970106
19700
197119
197212
19731
19740
19754
19761
19776
19780
19790
19801
19812
19820
19831
19841
19854
19860
19870
19883
19890
19902
19910
19922
19933
19948
19957
19962
19975
19984
19990
20003
20015
20026
20035
20046
200515
200695
200730
200891
200999
2010187
2011148
2012121
201393
201443
201575
201651
201742
201850
201950
202065
202149
202228
202374
20246
Total1631