*Excludes Observations that spanned multiple years

Pre 1970110
197011
19713
19724
19731
19740
19754
19761
19771
19783
19792
19804
19810
19820
19832
19842
19851
19860
19870
19880
19890
19900
19910
19920
19930
19942
19952
19960
19972
19982
199916
20000
20010
200222
200316
200413
200519
200669
20071
200812
200945
201038
201117
201212
20133
20141
20151
20161
20173
20181
20191
20200
20210
20220
20230
20240
Total448