*Excludes Observations that spanned multiple years

Pre 19709
19700
19710
19720
19730
19740
19750
19760
19770
19781
19790
19800
19810
19820
19830
19840
19850
19860
19870
19880
19892
19902
19911
19925
19935
19941
19950
19961
19970
19981
19990
20000
20010
20021
20032
20040
20050
20062
20070
20080
20090
20100
20111
20122
20130
20140
20151
201616
20170
20180
20190
20200
202122
20220
20230
20240
Total75