*Excludes Observations that spanned multiple years

Pre 19704
19700
19710
19720
19730
19742
19750
19762
19771
19783
19795
19804
19817
19821
198310
19843
198520
198614
198718
198811
19898
199015
19912
199212
19935
19943
19959
19967
199746
199849
199983
2000195
200175
200290
2003265
2004284
2005404
2006331
2007304
2008248
2009286
2010521
2011388
201278
2013109
201414
20151
20160
20170
Total3937