The dollar's share hit a historical bottom around 45-46% in the early 1990s (specifically hitting roughly 45.8% in 1991 and remaining in the high 40s/low 50s through 1994). By the end of 1994 and into 1995, the share began to rise again, eventually peaking at over 70% in 2001.
Another factor was that the 1990's was the Pre-Euro Era, the peak of the "multi-polar" reserve system. Before the Euro was launched in 1999, global reserves were split among many more national currencies (the French franc, the Dutch guilder, etc.), which naturally diluted the dollar's total share more than the current "USD vs. Euro" system.
Another factor was that the 1990's was the Pre-Euro Era, the peak of the "multi-polar" reserve system. Before the Euro was launched in 1999, global reserves were split among many more national currencies (the French franc, the Dutch guilder, etc.), which naturally diluted the dollar's total share more than the current "USD vs. Euro" system.