*Excludes Observations that spanned multiple years

Pre 197010
19701
19712
19727
19732
19748
19756
19768
19778
19786
197916
19809
198116
198214
198323
198436
198523
198637
198745
198845
198941
199056
199161
199256
199356
199468
199568
1996100
1997164
1998168
1999234
2000131
2001145
2002120
2003173
2004147
2005164
2006159
2007189
2008172
2009154
2010177
2011182
2012217
2013171
2014182
2015174
201642
20170
20180
Total4093