*Excludes Observations that spanned multiple years

Pre 19703
19700
19710
19720
19730
19740
19752
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19870
19882
19890
19902
19910
19921
19934
19941
19951
19960
19971
19981
19991
20004
20010
20025
20030
20040
20050
20060
20070
20081
20090
20100
20110
20120
20131
20140
20150
20160
20170
20181
20190
20200
20213
20224
20232
20240
Total40