*Excludes Observations that spanned multiple years

Pre 197034
19700
19716
1972121
197379
19741
19751
19761
19770
19781
19790
19801
19811
19821
19830
198440
19852
198613
198791
198888
198928
199081
1991161
199244
199361
199472
1995186
1996287
1997341
199842
199916
200029
200110
200226
200395
200498
2005112
200673
200771
200896
200989
201068
201166
2012147
2013348
2014465
2015382
2016367
201765
20182
20190
Total4409