*Excludes Observations that spanned multiple years

Pre 197016
19700
19711
19720
19730
19740
19752
19760
19770
19780
19790
19800
19810
19820
19830
19841
19850
19868
198715
198839
19890
199012
199110
19927
19931
199422
199510
19960
19971
19985
19995
20004
20010
20023
20034
20045
20051
20063
20073
20084
20099
20109
20117
20124
201315
201411
20154
20168
20178
20187
20195
202013
202126
202221
202329
202420
Total378