*Excludes Observations that spanned multiple years

Pre 197060
19700
19710
19720
19730
19741
19755
19762
19773
19781
19793
19803
19811
19820
19833
19841
19851
198611
19870
19880
19891
19903
19916
19922
19934
19948
199514
19961
19979
199825
19992
20007
200114
20028
20034497
2004662
20052095
2006198
2007748
2008227
20091217
201052
201131
201214
201328
201455
201549
2016119
2017206
20180
Total10397