*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19831
19840
19853
19860
19878
19880
19890
19900
199117
199210
199340
19941
199519
199613
19975
19980
19990
20000
20019
20022
20032
20040
20050
20061
20071
20080
20092
20101
20110
20120
20131
20140
20151
20163
20171
20180
20190
20200
20211
20223
20232
20240
Total149