*Excludes Observations that spanned multiple years

Pre 19702
19700
19713
19720
19730
19740
19751
19760
19770
19780
19792
19800
19810
19820
19831
19841
19851
19861
19870
19882
19890
19900
19913
19927
19937
19948
19950
19961
19971
19980
19994
20003
20012
20021
20030
20041
20050
20060
20070
20083
20093
20100
20110
20120
20130
20140
20152
20160
20170
20180
20190
20201
20210
20220
20230
20240
Total61