*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197008170631
1970009009
197101310317
1972002013
1973011013
1974015006
1975116019
19760170412
197700140216
1978023005
197903120318
19801480316
198101110820
198201130519
19830590620
19840370616
19850340714
19860790319
198704160525
198819150429
1989014180941
1990160301799
1991225251356
199237390756
1993137500795
1994310414809264
1995880118111218
199667714007230
199739953109642
19986103410010529
1999474386010474
2000461587018670
2001430580120635
200214473402781
20034689760151063
2004524813030151571
20053223646017889
200651149460161081
20073969101221032
20086260642112921
20094501430019954
20105461435018919
20112222455018697
20121083710140381899
201310119414991892793
201481710157531463442
201581898215821404206
201672194237542194799
2017182156227632034656
2018102519232231094963
2019112553248051985247
202007036078184
202146060070
2022000000
Total172182662644927156946483