*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197022120016
1970002002
1971010001
1972010001
1973013004
1974010001
197534700050
1976010001
1977002002
1978100001
197901050015
198021330018
1981001001
1982024006
1983004004
1984000000
1985011002
1986013004
1987000000
19881730011
198905110016
199031260021
19915790021
1992054009
19931760014
1994028100038
199551951100211
199643640044
19971315900325
19982109900120
1999465210090
20003881700108
20014272600282
200202672700294
2003203462200388
200494393400482
200542542700285
2006133082100342
2007175954400656
200873484300398
200971843900230
201086864600740
201137186300784
201298307900918
201382734700328
201431902101215
201542983200334
201632625900324
2017244726200558
201883565400418
201983144900371
2020132917400378
202193826400455
2022104368300529
2023004004
2024000000
Total228948111600110870