*Excludes Observations that spanned multiple years

Pre 197045
19700
19711
19721
19731
19740
19750
19760
19771
19780
19791
19803
19810
19820
19830
19840
19851
19864
19872
19882
198915
19906
19912
19921
19931
19945
199514
19963
199712
199823
199987
2000294
200162
2002202
20031130
2004984
2005457
2006418
2007337
2008691
20095438
2010439
2011985
2012484
2013630
2014474
2015595
2016537
2017364
201837
Total14789