*Excludes Observations that spanned multiple years

Pre 197010
19700
19711
19720
19730
19740
19750
19761
19770
19780
19790
19800
19811
19820
19830
19840
19850
19862
19870
19886
19890
19904
199123
19923
19932
19941
19954
19960
19973
19981
19990
20000
20010
20022
20032
20044
20052
20062
20071
20081
20097
20108
20116
20121
20130
20140
20151
20161
20171
20180
201926
20201
20213
20221
20239
20240
Total141