*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 19703190417
1970018009
197106140020
197206430049
197300120113
197402120014
1975004004
1976004015
19771170110
1978003003
1979004015
1980001023
198110120013
198200140216
1983003014
1984002035
1985016018
1986015028
1987005016
19881180111
198902120115
19901390114
1991610140030
19922290114
19933590118
199435320343
199506540262
199609320142
1997115240141
199805480255
199926190027
200048330146
200104390043
200200440145
200302230227
200403330137
200541210228
200602470352
200723340140
200802110013
200900190019
201063600473
201152380550
201260600167
20138210401115
201416512200143
20158414203157
20168515901173
201712616804190
20189715902177
20198912202141
2020221421602254
202122623303264
202291014004163
202300430043
2024000000
Total17318625080772944