*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970000101
1970000000
1971000000
1972000000
1973000101
1974000000
1975000000
1976000000
1977000202
1978000101
1979001315
1980000044
1981000112
1982001203
1983000101
1984000000
1985000202
1986000101
1987000314
1988001113
198900112114
19900007613
19910024410
19920008210
199300211518
1994001131024
1995004172142
1996006142646
1997002124559
1998002222448
1999000141933
2000000462369
20010024655103
20020027573150
20030055086141
20040014878127
20050015789147
20060054297144
200700551118174
200800151101153
20090017941121
2010000110132242
2011001163139303
201200091157248
2013000471865
201400023023
201500081119
2016000101
2017000000
2018000000
Total0047114113892577