*Excludes Observations that spanned multiple years

Pre 19700
19700
19711
19721
19730
19740
19750
19760
19770
19780
19790
19800
19811
19820
19830
19840
19850
19860
19870
19880
19895
19901
19918
199212
19932
199411
19951
19961
19970
19980
19990
20000
20011
20020
20031
20041
200512
20065
20072
20082
200910
201010
20117
20129
20138
20149
20153
20168
201710
20184
201911
20202
20211
20224
20230
20240
Total164