*Excludes Observations that spanned multiple years

Pre 197017
19707
19712
19726
19733
19745
19755
19766
19775
19784
197914
19808
198114
198221
198327
198436
198530
198632
198731
198826
198927
199030
199132
199231
199332
199438
199541
199653
199793
199898
1999112
2000101
2001105
200297
2003110
200497
200597
2006103
200798
200881
2009111
2010116
2011101
2012177
2013107
2014113
201586
201619
20170
20180
Total2605