*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 19700140510
1970000011
1971000000
1972001001
1973000000
1974002013
1975002013
1976000000
1977000044
1978001034
1979000022
1980101013
1981002035
1982002057
1983003058
1984003058
1985012047
1986001012
19870341412
19880380415
19890131510
19900530614
19910660113
19920720312
199301020113
199412591605281
199512411706265
199602071403224
199721053406147
19980314202318
199902510632
2000232513010350
200101001108119
200202191407240
200304370555
20041188704200
2005189607103
20061101708117
2007212621010159
2008057170680
200903160221
2010029310363
2011025170547
2012010148011160
2013213450010196
2014110664013184
2015111292010215
20161186134013334
20173199127011340
20184183155013355
20190131107010248
20202135130016283
20211146130011288
2022316611506290
20230080210
2024000000
Total304092146322945881