*Excludes Observations that spanned multiple years

Pre 19706
19700
19710
19720
19730
19740
19752
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19862
19873
19880
19890
19903
19910
19920
19930
19943
19956
19960
19970
19980
19992
20001
20010
20022
20030
20040
20050
20061
20071
20083
20094
20100
20111
20121
20130
20140
20150
20161
20170
20182
20192
20204
20214
20224
20234
20240
Total62