*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19870
19880
19890
19900
19910
19920
19930
19940
19950
19960
19970
19980
19990
20000
20010
20020
20030
20040
2005216
2006312
2007275
2008150
20095
2010129
2011202
2012155
2013253
2014160
2015242
2016254
2017360
2018224
2019122
20200
20210
20220
20230
20240
Total3059