Corpus

1975

1995

2015

Overall

AL

42,825

54,001

82,701

179,527

S

50,877

65,637

61,443

177,957

BMB

44,012

65,317

58,520

167,849

EE

69,230

79,146

93,338

241,714

Total

206,944

264,101

296,002

767,047