dow jones vs gspc return in the 1970s

In the 1970s, the S&P 500 (GSPC) returned 16.1% and the Dow Jones Industrial Average (DJI) returned 5.5%.

DATE the Dow Jones Industrial Average the S&P 500
December 1979
$838.74
$107.94
November 1979
$822.35
$106.16
October 1979
$815.70
$101.82
September 1979
$878.58
$109.32
August 1979
$887.63
$109.32
July 1979
$846.42
$103.81
June 1979
$841.98
$102.91
May 1979
$822.33
$99.08
April 1979
$854.90
$101.76
March 1979
$862.18
$101.59
February 1979
$808.82
$96.28
January 1979
$839.22
$99.93
December 1978
$805.01
$96.11
November 1978
$799.03
$94.70
October 1978
$792.45
$93.15
September 1978
$865.82
$102.54
August 1978
$876.82
$103.29
July 1978
$862.27
$100.68
June 1978
$818.95
$95.53
May 1978
$840.61
$97.24
April 1978
$837.32
$96.83
March 1978
$757.36
$89.21
February 1978
$742.12
$87.04
January 1978
$769.92
$89.25
December 1977
$831.17
$95.10