*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19731
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19870
19881
19891
19900
19911
19920
19939
19943
199510
199610
19972
19980
19991
20001
20011
20021
20037
20040
20051
20063
20070
20080
20091
20100
20110
20121
20137
20148
20157
20161
20170
20182
20190
20200
20210
20220
20230
20240
Total82