*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19740
19754
19762
19770
197813
19793
19802
19811
19824
198314
19849
19856
19865
19872
19885
19894
19907
19916
19925
19939
199412
199512
199640
1997194
199895
1999152
2000119
200184
2002101
2003172
2004100
2005105
2006171
2007103
200876
2009169
2010221
2011153
2012109
201382
2014102
201583
201624
20170
20181
Total2583