*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970002001535
1970001023
1971002057
1972001045
1973004037
1974003036
1975005027
19760040610
19771060815
1978004048
19790050510
19800060511
198100101011
198200701320
19830040610
19841020710
19850080816
19861190718
198700110920
1988102601643
198901160926
1990001801230
199116340647
1992221701334
199310310739
1994034201459
1995434701367
1996223701354
1997423101855
1998224901265
1999102601239
2000014501965
2001104701967
2002004301053
2003125701474
2004003802058
2005003102859
2006004102364
2007005712381
2008015611775
20090474025103
20102285122112
201110146136184
201221142140186
201303215045263
201436216067292
2015032841110398
2016113630125490
2017424121134553
2018323950106506
201942470099575
202023526088619
2021315970127728
2022326120170787
2023345620152721
2024136760159839
2025001101526
Total55656678719608765