*Excludes Observations that spanned multiple years

Pre 19706
19700
19712
19720
19730
19740
19751
19760
19770
19780
19790
19800
19810
19820
19830
19840
19851
19864
198711
19884
19891
19902
19911
19922
19930
19943
19952
19960
19970
19982
19991
20005
20011
20021
20032
20041
20050
20064
20076
20088
20097
20109
20115
201212
201317
20141
20151
20162
20173
20180
20191
20200
20210
20223
20238
20240
Total140