*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970211004
1970004004
1971000000
1972000000
1973000000
1974000000
1975012003
1976203005
1977007007
1978003003
1979014005
1980004004
1981002002
1982007007
1983002002
1984004004
1985012003
1986036009
1987026008
19880480012
198911070018
1990037170054
1991410150029
1992312170032
19936712700104
199412843500131
1995941240074
19961842180078
1997131582800199
199881592600193
19996981700121
200071293200168
20019943000133
20023885300144
200341474200193
200472174500269
2005101165400180
200671259800230
20076927700175
200895412900192
2009216811800207
2010213822000279
2011233120400258
201236566800160
201311359100137
201494630076
2015144280046
2016030003
2017000000
Total28120361648003965