*Excludes Observations that spanned multiple years

Pre 19703
19700
19710
19720
19730
19740
19750
19760
19770
19780
19791
19800
19811
19821
19830
19840
19851
19865
19873
198811
19893
19904
19914
19923
19933
19948
199523
19968
199712
199813
19999
20002
20019
20022
20031
20042
20051
20061
20072
20083
20091
201010
20111
20123
201323
20145
20157
20164
20170
20182
20193
20201
20212
20220
20234
20240
Total205