*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 19700070714
1970001012
1971001023
1972001001
1973001023
1974062019
1975000011
1976021014
19770370010
1978024028
197902120216
1980004037
19810140510
19820060410
19830350311
19840060410
19851240714
19861470618
19872470417
19882280517
198927120728
199017190532
1991610351355
199216180530
1993711370560
1994424360771
199576460968
1996614280553
1997418500981
19984124501172
1999063501051
200026430960
200105410854
200201500859
200325570468
200407410755
200505880699
200627770995
200786730996
20083329415135
20093417209188
20102028807297
201135387013408
201274535027573
201310360017378
201441250115271
201543288024319
201622389031424
2017439532032607
201873573034617
201963568026603
202031675039718
202112580128612
202222539134578
2023008008
202400170118
Total144265717455388126