*Excludes Observations that spanned multiple years

Pre 19703
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19861
19872
19880
19892
19901
19916
19920
19931
19946
199519
199632
199723
19985
19990
20000
20010
20020
20031
20040
20054
20061
20072
20081
20092
20103
20110
20121
20132
20141
20151
20161
20171
20181
20190
20200
20210
20220
20231
20240
Total124