U.S. Nuclear Stockpile (1945-2009)

References:
DOE Facts: Declassification of Certain Characteristics of the United States Nuclear Weapon Stockpile (December 1993)
Fact Sheet: Increasing Transparency in the U.S. Nuclear Weapons Stockpile (3 May 2010) (PDF)

Early U.S. Nuclear Weapon Stockpile Data

Source:
The United States Nuclear Weapon Program: A Summary History
U.S. Department of Energy, March 1983


Fiscal Year

1945

1946

1947

1948

Number of nonnuclear components

1. Gun-type

0

0

0*

2*

2. Implosion-type

2

9

29*

53*

Number of nuclear components

3. Gun-type

0

0

0

0

4. Implosion-type

2

9

13

50

*Numbers declassified in 1976

Fiscal Year

Weapons in Inventory

Megatonnage in Inventory

Weapons Built

Weapons Retired

Weapons Disassembled

1945

2

0.04

2

0

0

1946

9

0.18

7

0

0

1947

13

0.26

4

0

0

1948

50

1.25

43

6

0

1949

170

4.19

123

3

0

1950

299

9.53

264

135

0

1951

438

35.25

284

145

0

1952

841

49. 95

644

241

0

1953

1,169

72.80

345

17

0

1954

1,703

339.01

535

1

0

1955

2,422

2,879.99

806

87

0

1956

3,692

9,188.65

1,379

109

0

1957

5,543

17,545.86

2,232

381

0

1958

7,345

17,303.54

2,619

817

0

1959

12,298

19,054.62

7,088

2,135

0

1960

18,638

20,491.17

7,178

838

0

1961

22,229

10,947.71

5,162

1,571

0

1962

25,540

12,825.02

4,529

766

0

1963

28,133

15,977.17

3,185

830

0

1964

29,463

16,943.97

3,493

2,534

0

1965

31,139

15,152.50

3,519

1,936

0

1966

31,175

14,037.46

2,429

2,357

0

1967

31,255

12,786.17

1,693

1,649

0

1968

29,561

11,837.65

536

2,194

0

1969

27,552

11,714.44

684

3,045

0

1970

26,008

9,695.20

219

1,936

0

1971

25,830

8,584.40

1,073

1,347

0

1972

26,516

8,531.51

1,546

1,541

0

1973

27,835

8,452.00

1,171

544

0

1974

28,537

8,325.22

959

807

0

1975

27,519

7,368.38

748

2,240

0

1976

25,914

5,935.51

427

2,181

0

1977

25,542

5,845.0

221

998

0

1978

24,418

5,721.16

50

1,148

0

1979

24,138

5,696.34

170

730

0

1980

24,104

5,618.86

0

904

732

1981

23,208

5,382.91

30

1,887

1,577

1982

22,886

5,358.89

338

1,537

1,535

1983

23,305

5,232.47

217

749

1,120

1984

23,459

5,192.20

187

1,143

994

1985

23,368

5,217.48

195

1,322

1,075

1986

23,317

5,414.54

140

1,224

1,015

1987

23,575

4,882.14

Unknown

958

1,189

1988

23,205

4,789.77

Unknown

1,023

581

1989

22,217

4,743.34

Unknown

1,794

1,208

1990

21,392

4,518.91

Unknown

Unknown

1,154

1991

19,008

3,795.94

Unknown

Unknown

1,595

1992

13,708

3,167.88

Unknown

Unknown

1,856

1993

11,511

2,647.31

Unknown

Unknown

1,556

1994

10,979

2,375.30

Unknown

Unknown

1369

1995

10,904

Unknown

Unknown

Unknown

1,393

1996

11,011

Unknown

Unknown

Unknown

1,064

1997

10,903

Unknown

Unknown

Unknown

498

1998

10,732

Unknown

Unknown

Unknown

1,062

1999

10,685

Unknown

Unknown

Unknown

206

2000

10,577

Unknown

Unknown

Unknown

158

2001

10,526

Unknown

Unknown

Unknown

144

2002

10,457

Unknown

Unknown

Unknown

344

2003

10,027

Unknown

Unknown

Unknown

222

2004

8,570

Unknown

Unknown

Unknown

206

2005

8,360

Unknown

Unknown

Unknown

280

2006

7,853

Unknown

Unknown

Unknown

253

2007

5,709

Unknown

Unknown

Unknown

545

2008

5,273

Unknown

Unknown

Unknown

648

2009

5,113

Unknown

Unknown

Unknown

356