*Excludes Observations that spanned multiple years

Pre 197038
19701
19710
19720
19730
19740
19751
19760
19772
19786
19790
19800
19810
19821
19830
19840
19850
19861
19870
19880
19890
19900
19912
19926
19931
19940
199542
199630
199713
19980
199922
20002
20017
20023
20033
20046
20050
20060
20070
20080
20090
20100
20110
20121
20131
20144
20151
20162
20171
20185
20190
20201
20211
20220
20230
20240
Total204