*Excludes Observations that spanned multiple years

Pre 19709
19700
19710
19720
19730
19740
19750
19760
19770
19780
19791
19800
19810
19820
19831
19840
19850
19862
19870
19881
19890
19900
19911
19921
19931
19940
19951
19960
19970
19980
19990
20000
20010
20020
20030
20041
20050
20062
20071
20080
20090
20100
20110
20126
20132
20140
20150
20161
20170
20181
20191
20200
20210
20221
20230
20240
Total34