*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19741
19750
19761
19770
19780
19790
19800
19811
19820
19830
19841
19855
19864
19878
19883
19892
19903
19911
19922
19932
19940
19950
19961
19972
19985
19993
200013
20017
20022
20039
20049
20058
20064
20070
20080
20093
20101
20110
20120
20130
20141
20151
20160
20170
20180
Total105