Social class

1998

1999

2000

2001

I Professional

47,024

46,533

45,761

45,843

II Intermediate

147,309

144,804

144,689

144,832

IIIN Skilled non-Manual

47,057

47,102

48,088

48,053

IIIM Skilled Manual

58,894

58,540

57,211

60,565

IV Partly Skilled

31,012

30,805

31,689

29,606

V Unskilled

7,305

7,451

7,339

7,137

Unknown

50,987

53,456

54,314

63,609

Total

389,588

388,691

389,091

399,645

Social class

1998

1999

2000

2001

I Professional

38,510

38,864

38,841

39,748

II Intermediate

115,615

115,667

117,675

120,831

IIIN Skilled non-Manual

35,610

36,286

37,778

38,774

IIIM Skilled Manual

44,207

44,474

44,415

48,412

IV Partly Skilled

22,692

23,097

24,152

23,114

V Unskilled

5,329

5,538

5,535

5,604

Unknown

36,257

39,139

40,322

48,989

Total

298,220

303,065

308,718

325,472