*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197001601623
1970000000
1971000000
1972000000
1973000000
1974000000
1975000011
1976000000
1977001001
1978000011
1979000011
1980001012
1981002024
1982000000
1983000000
1984001001
1985000011
1986011002
1987001012
1988003025
1989007007
1990004015
19912180011
199230160019
199331170122
199454230133
199561260437
199661210129
199702140117
199810200021
199921140118
20001070210
2001113350049
200274690080
200344140123
200415360446
2005308101554
200614120118
2007218170239
20080390012
2009016007
201001160118
201102110013
2012112170131
2013316170036
2014232210055
2015023230349
2016215220039
2017420370162
2018228340064
2019427380069
2020230270463
2021021310557
2022124190246
2023000000
Total963247141681203