Exchange Rates - X-Rates

First things first:
Dataset from kaggle
This image from Wikipedia is what I want to create
R code:

library(ggplot2) african_economicdata <- read.csv("african_crises.csv") Z_ED <- subset(african_economicdata, country == "Zimbabwe") Z_ED2001 <- subset(Z_ED, year > 2000) Z_ED2001$log10_exchange <- log10(Z_ED2001$exch_usd) ggplot(Z_ED2001, aes(Z_ED2001$year,Z_ED2001$log10_exchange)) + geom_line() +geom_point() + xlab("Year") + ylab("Exchange Rate in USD") + theme_minimal()

Here is what the result looks like
A few things are throwing me off:

This happens to be a cross section of two things i never really understood in my bachelors, forex and logarithms
From the eye test the curve looks similar to the image from wikipedia, but the y-axis values don't make much sense to me (possibly due logarithms as previously stated).
The dataset in Kaggle is light on details and I don't really know how to interpret the exchange rate values. Take 2001 for instance, does 5.510 x 10^-25 mean that 1 ZWD is equal to 5.510 x 10^-25 USD? The number is so small that it kind of melts my brain.
I'm having trouble finding information about the ZWD during this time period, the trends in the wikipedia image for OMIR and the Parallel rate seems to have much fine grain data, looking at the fluctuations between 07-08. Does that mean that the data I'm working with would be the Official data?

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Exchange Rates - X-Rates

[R] Trouble creating a Log Scale graph of Zimbabwean Dollars vs United States Dollars

The Easiest FOREX Trade Setup - 2020 - YouTube