*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197010110416
1970000000
1971002002
1972002002
1973003014
1974003014
1975004026
1976002024
197710140217
1978004004
197910110113
19800090110
198101100011
198200170219
1983008008
1984002024
19850760215
198607120120
198703130016
19881780319
198926120222
1990317240044
19911614260157
1992111180232
1993514400059
1994126370064
1995211450058
1996729280064
1997228580189
1998324530181
199918380249
200037480058
200127490159
200213780082
200355830194
20044119101107
20053513000138
20069510601121
20073612000129
20085513502147
20092321501221
20108317300184
201110923601256
201241122900244
20138624500259
201461026300279
201551436200381
201612741800437
2017131047600499
201811860400623
201918660000624
20208658700601
20215566900679
20225956500579
2023018009
2024000000
Total19737570100417623