I won't speculate on the answer, but I'll give you the evidence. In the last eighty years, a player has increased his home run totals by 30 from one season to the next 16 times. Dave Johnson holds the record, going from 5 dingers in 1972 to 43 the next season. If it all evened out, there would be two occurrences of a 30+ increase every ten years. However, here are the actual numbers:

• 1925-1934 → 2
• 1935-1944 → 0
• 1945-1954 → 1
• 1955-1964 → 0
• 1965-1974 → 2
• 1975-1984 → 0
• 1985-1994 → 1
• 1995-2004 → 10

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