*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19801
19810
19820
19830
19840
19850
19860
19870
19880
19890
19900
19910
19920
19930
19940
19950
19960
19970
19981
19990
20000
20011
20020
20031
20041
20050
20060
20070
20082
20093
20100
20114
20121
20130
201413
20150
20163
20173
20182
20193
20209
202115
202235
202327
20240
Total125