*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970001001
1970001001
1971000000
1972000000
1973001034
19740040610
1975000088
197600301215
197700501116
197800701219
197900201517
198000101415
198100101819
198200402226
198300501722
198400102021
198502301722
198602901930
1987021202034
198802612332
1989091201940
19900151011945
19910162611760
1992272302153
1993283702269
199422567029123
1995593002266
19963222802174
199711770027115
199813573031140
199901871020109
200002286035143
200127105035149
200231114022140
200313124024152
200437129025164
200500119033152
200605192036233
200702155336196
2008151871027230
2009311185052251
201021211150265
201111312164379
20123115150118647
2013416110121737
2014487010176889
20152897432851272
201641119704241626
201718144314261879
201823145354831946
20191089162593642097
202051194704622415
202133212034792608
202202147023841858
2023000000
Total703891648841464621634