1960

1,310

428

1961

1,374

449

1962

1,445

472

1963

1,564

511

1964

1,486

485

1965

1,580

516

1966

1,734

566

1967

1,915

626

1968

2,168

708

1969

2,487

812

1970

2,832

925

1971

3,278

1,075

1972

3,855

1,371

1973

4,737

1,928

1974

5,749

2,359

1975

6,065

2,558

1976

6,536

2,645

1977

7,022

2,879

1978

7,776

3,420

1979

8,852

4,071

1980

10,685

4,990

1981

11,947

5,655

1982

12,786

5,975

1983

14,135

6,689

1984

15,182

7,117

1985

14,847

6,748

1986

14,922

6,853

1987

16,357

7,767

1988

18,722

9,303

1989

20,897

10,715

1990

23,101

12,745

1991

24,898

14,412

1992

26,225

16,099

1993

29,489

18,250

1994

32,718

21,421

1995

35,012

24,702

1996

36,562

25,929

1997

38,840

26,158

1998

36,229

21,647

1999

36,342

21,442

2000

40,364

23,414

2001

37,974

21,194

2002

38,865

21,705

2003

40,627

23,319

2004

45,716

27,046

2005

48,939

29,400

2006

52,466

33,020

2007

58,243

38,646

2008

55,369

39,136

2009

53,464

36,758

2010

59,813

43,867