*Excludes Observations that spanned multiple years

Pre 1970121
197010
19714
19729
197313
197447
197549
197629
197712
197821
197934
198015
198122
198218
198330
1984114
198540
198662
198744
198857
198957
199055
199167
199263
199374
199475
199587
199666
1997116
199888
1999117
2000122
2001127
2002150
2003154
2004157
2005157
2006139
2007118
2008171
2009160
2010193
2011198
2012175
201376
2014115
2015102
201620
20171
20180
20190
20200
20211
20220
Total3952