*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970000000
1970000000
1971000000
1972000000
1973000000
1974000000
1975000000
1976000000
1977000000
1978000000
1979000000
1980000000
1981000000
1982000000
1983000000
1984000000
1985000000
1986000000
1987003003
1988013004
1989002002
1990102003
1991124007
1992012003
1993125008
1994005005
1995009009
1996014005
1997005005
1998012003
1999008008
2000009009
200101120013
200200140014
200312120015
20040290011
200500130013
200600160016
200700220022
200800200020
200900220022
201020190021
201110280130
201200180018
201322320036
201400320032
201512260029
201620380040
201701440045
201802480050
201931460050
202030560059
202110580059
202210620063
2023001001
2024002002
Total202171301755