*Excludes Observations that spanned multiple years

Pre 197011
19701
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19821
19830
19841
19850
19863
19877
19881
19891
19903
19910
19922
19933
19941
19952
199610
199712
19984
19991
20009
20010
20024
200312
20040
20051
20060
20072
20081
20090
20100
20110
201222
20130
20142
20151
20160
20172
20184
20191
20200
20210
20225
20230
20240
Total130