*Excludes Observations that spanned multiple years

Pre 197052
19700
19711
19720
19731
19740
19751
19761
19770
19780
19792
19801
19810
19821
19831
19840
19850
198632
198722
198849
198918
19909
199128
199211
199316
199415
199520
199613
199727
19985
199936
2000222
2001363
2002261
2003163
200482
200574
2006153
200774
2008279
20091958
2010118
2011206
2012173
2013124
2014201
2015340
2016216
2017207
2018421
2019226
2020459
2021496
20222585
2023253
202452
Total10068