1960

1,334

436

1961

1,401

458

1962

1,473

481

1963

1,602

523

1964

1,533

501

1965

1,631

533

1966

1,789

584

1967

1,965

642

1968

2,211

722

1969

2,528

826

1970

2,860

934

1971

3,273

1,073

1972

3,845

1,367

1973

4,635

1,886

1974

5,592

2,295

1975

6,119

2,580

1976

6,501

2,631

1977

6,942

2,846

1978

7,757

3,411

1979

8,819

4,055

1980

10,135

4,733

1981

11,258

5,329

1982

12,139

5,672

1983

13,740

6,502

1984

15,086

7,072

1985

14,971

6,804

1986

14,927

6,855

1987

15,928

7,563

1988

18,467

9,177

1989

20,771

10,650

1990

22,869

12,617

1991

24,520

14,193

1992

26,241

16,109

1993

28,865

17,864

1994

32,761

21,449

1995

35,229

24,855

1996

36,259

25,714

1997

39,549

26,636

1998

36,705

21,932

1999

36,697

21,651

2000

40,029

23,220

2001

37,546

20,956

2002

37,687

21,047

2003

39,136

22,464

2004

42,380

25,072

2005

45,537

27,356

2006

50,567

31,825

2007

56,369

37,402

2008

52,941

37,419

2009

52,177

35,873

2010

57,603

42,246