*Excludes Observations that spanned multiple years

Pre 19703
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19851
19861
19873
19882
19890
19900
19910
19920
199316
19940
19951
19960
19971
19980
19990
20000
20010
20023
20030
20041
20050
20060
20070
20080
20091
20100
20110
20120
20131
20140
20150
20160
20170
20180
20190
20200
20210
20220
20230
20240
Total34