1920

230,221

102,971

44.7%

261,257

178,968

68.5%

1922

224,142

108,643

48.5%

243,936

158,737

65.1%

1924

211,450

109,688

51.9%

240,800

174,415

72.4%

1926

205,822

103,106

50.1%

227,118

153,442

67.6%

1928

203,193

117,300

57.7%

241,096

194,840

80.8%

1930

220,671

100,157

45.4%

240,086

176,161

73.4%

1932

232,545

146,038

62.8%

265,181

216,381

81.6%

1934

247,248

133,098

53.8%

268,482

203,626

75.8%

1936

251,807

155,781

61.9%

283,695

226,353

79.8%

1938

248,443

151,620

61.0%

269,963

208,710

77.3%

1940

253,138

146,354

57.8%

295,237

240,694

81.5%

1942

258,749

118,478

45.8%

271,773

170,514

62.7%

1944

203,749

85,546

42.0%

248,392

197,217

79.4%

1946

241,550

127,889

52.9%

263,422

190,566

72.3%

1948

236,236

133,742

56.6%

269,779

221,003

81.9%

1950

250,374

128,058

51.1%

272,103

210,527

77.4%

1952

274,929

146,252

53.2%

304,053

260,469

85.7%

1954

283,651

136,466

48.1%

296,611

227,454

76.7%

1956

273,236

136,081

49.8%

316,444

263,204

83.2%

1958

289,851

145,462

50.2%

305,614

229,483

75.1%

1960

279,685

196,210

70.2%

322,876

276,612

85.7%

1962

301,003

152,422

50.6%

318,721

248,441

77.9%

1964

290,109

185,102

63.8%

327,477

280,975

85.8%

1966

306,852

156,042

50.9%

330,182

264,971

80.2%

1968

299,818

203,353

67.8%

331,078

285,892

86.4%

1970

304,328

166,126

54.6%

325,315

254,790

78.3%

1972

336,913

238,215

70.7%

386,867

327,176

84.6%

1974

352,244

179,153

50.9%

373,889

260,496

69.7%

1976

411,087

208,346

50.7%

454,924

339,346

74.6%

1978

381,769

207,903

54.5%

410,046

296,521

72.3%

1980

452,510

228,750

50.6%

496,402

371,976

74.9%

1982

412,841

198,840

48.2%

445,888

328,082

73.6%

1984

482,429

192,226

39.8%

526,841

395,006

75.0%

1986

421,264

166,622

39.6%

443,935

326,436

73.5%

1988

471,352

224,217

47.6%

505,541

378,981

75.0%

1990

408,354

201,118

49.3%

435,900

326,652

74.9%

1992

479,578

247,158

51.5%

529,299

417,564

78.9%

1994

485,629

228,603

47.1%

514,051

359,455

69.9%

1996

562,579

228,040

40.5%

590,751

417,232

70.6%

1998

602,716

161,568

26.8%

639,241

338,733

53.0%

2000

671,325

223,419

33.3%

698,260

417,916

59.9%

2002

606,147

174,730

29.0%

624,548

340,272

54.5%

2004

595,668

220,210

37.0%

638,474

456,096

71.4%

2006

626,853

214,840

34.3%

649,436

411,061

63.3%

2008

630,633

285,215

45.2%

668,085

497,599

74.5%

2010

639,309

206,791

32.5%

651,335

367,096

56.36%