*Excludes Observations that spanned multiple years

Pre 197025
19700
19710
19720
19731
19740
19751
19760
19771
19780
19790
19800
19811
19820
19831
19841
19851
19864
19870
19889
19897
19901
19910
19920
19930
19942
199516
199611
199715
199861
199950
200038
200129
200233
2003729
20041188
2005245
2006191
2007127
2008279
20095026
2010183
2011696
2012768
2013469
2014296
2015358
2016342
2017443
201822
20190
Total11670