*Excludes Observations that spanned multiple years

Pre 19703
19700
19710
19720
19730
19740
19752
19760
19770
19780
19790
19800
19811
19820
19830
19840
19850
19861
19872
19884
19890
19900
19913
19926
19937
19942
199515
199617
199729
19982
199928
20009
20018
20022
20030
20040
20050
20060
20070
20080
20090
20101
20110
20121
20131
20140
20150
20160
20170
20182
20192
202010
20215
20224
20233
20240
Total170