*Excludes Observations that spanned multiple years

Pre 197059
19701
19710
19720
19731
19740
19750
19760
197716
19782
19790
19800
19810
19820
19830
19840
19850
19861
19870
19881
19890
19900
19913
19921
19934
19940
19958
199626
199780
19980
199953
20000
20010
20022
20031
20040
20050
20060
20070
20080
20090
20100
20110
20121
20131
20140
20150
20161
20170
20181
20190
20200
20211
20221
20230
20240
Total265