*Excludes Observations that spanned multiple years

Pre 19705
19700
19710
19720
19730
19740
19750
19762
19770
19780
19791
19800
19810
19820
19830
19840
19850
19861
19870
19880
19890
19901
19917
19921
19931
19944
19951
199613
19974
19981
19992
20000
20011
20020
20033
20049
20053
200611
20075
200819
200938
201032
201126
201242
201329
201421
201523
201614
20172
20181
20190
20200
20210
20222
20230
20240
Total325