*Excludes Observations that spanned multiple years

Pre 19703
19700
19710
19720
19732
19741
19758
19764
19770
19780
19792
19803
19810
19820
19830
19840
19850
19860
19870
19880
19893
19903
19910
19920
19932
199414
19951
199619
19978
19986
19998
20008
20012
20025
20033
200417
20056
200666
200710
20085
200936
201038
201112
20128
20130
20140
20150
20160
20170
20180
Total303