*Excludes Observations that spanned multiple years

Pre 19709
19700
19710
19720
19730
19741
19750
19760
19772
19780
19790
19800
19811
19820
19830
19840
19850
19860
19870
19880
19890
19901
19910
19921
19930
19940
19957
199620
19971
19980
19991
20000
20010
20020
20031
20040
20050
20060
20072
20080
20090
20100
20110
20120
20130
20140
20150
20160
20170
20180
20190
20200
20211
20220
20230
20240
Total48