*Excludes Observations that spanned multiple years

Pre 197025
19700
19710
19720
19730
19741
19751
19760
19772
19780
19791
19800
19812
19820
19830
19840
19850
19862
19870
19880
19890
19900
19910
19920
19930
19940
19950
19960
19970
19980
19991
20000
20010
20020
20030
20040
20050
20060
20071
20081
20090
20100
20110
20120
20130
20140
20150
20168
20173
20182
20190
20200
20213
20220
20230
20240
Total53