*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
19880
19890
19900
199152
19920
19930
19941
19952
19960
19973
19981
19992
20000
20010
20021
20030
20041
20050
20060
20070
20081
20090
20100
20110
20121
20131
20140
20150
20160
20173
20185
20190
20200
20210
20220
20230
20240
Total77