*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 19701030610
1970000000
1971000000
1972000000
1973000044
1974011013
1975000022
1976010034
1977012047
1978011024
1979002046
1980001012
1981003047
1982003058
1983004015
1984000066
1985002046
19860060410
19870050611
19880030912
19890140813
19900190919
199122170425
199221160827
1993132601040
1994122601140
199542250940
199622160727
1997211801233
1998332801145
199900170926
2000022001133
2001214401360
200212400548
2003433601154
2004322601142
2005233501656
2006234501161
2007204901364
200810732884
2009205501774
2010416501989
2011117901394
201212249049301
201346547067624
201449733072818
20157499901121122
2016717116201841370
20171218126301441437
2018310140001631576
20191416135101541535
202001460139186
2021000000
2022000000
Total9412385552139610170