*Excludes Observations that spanned multiple years

Pre 197010
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19870
19880
19891
19907
19918
19923
19930
199410
19955
199620
19970
19980
19991
20000
20010
20020
20030
20040
20050
20061
20070
20082
200924
201038
201147
201218
201341
201426
201516
201613
20171
20180
20190
20200
20210
20224
20230
20242
Total298