*Excludes Observations that spanned multiple years

Pre 197032
19700
19710
19720
19730
19740
19751
19761
19772
19781
19790
19800
19810
19820
19830
19840
19850
19861
19870
19881
19890
19900
19910
19920
19930
19945
19957
19960
19972
19981
19990
20000
20011
20020
20031
20040
20051
20060
20072
20080
20090
20100
20111
201214
201349
20140
20150
20162
20170
20180
20190
20200
20215
20220
20231
20240
Total131