*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19721
19730
19740
19750
19763
19770
19780
19790
19800
19811
19820
19830
19840
19850
19860
19870
19880
19890
19900
19918
19920
19930
19944
19951
19964
19971
19980
19990
20000
20010
20020
20030
20040
20053
20064
20070
200814
200932
201021
201118
201227
201317
20148
201513
201611
20170
20180
20190
20200
20210
20220
Total193