*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970017019
1970000000
1971021003
1972000000
1973002002
1974001001
1975023005
1976013004
1977007007
1978001001
1979033006
1980031004
1981001001
1982008008
1983005005
1984002002
1985131005
1986027009
19870770014
19880870015
198906120018
199022490035
1991713200040
1992214110027
1993368200091
199431822700212
199531031300119
1996101271200149
199774931800518
199825093300544
199922801400296
200024583500495
200114111900431
200203746101436
200344215100476
200415613500597
200504549600550
200624616600529
200704618600547
2008020812700335
2009013613100267
2010124717700425
2011032324500568
20120762300001062
20133784442001229
20142871415001288
201551087616001708
201631145786001934
201761334775002115
2018101376908012295
2019714031054012465
202007810079
202105210053
2022000000
Total891525866830422034