To answer the question about the trends in Nigeria's oil revenue, we need to carefully analyze the data presented in the chart. The table provides information on the percentage of total government revenue from oil for selected years between 1967 and 1990:
[tex]\[
\begin{tabular}{|r|r|}
\hline \multicolumn{1}{|c|}{ Year } & \multicolumn{1}{c|}{ Percentage } \\
\hline 1967 & 18.26 \% \\
\hline 1971 & 25.99 \% \\
\hline 1975 & 80.81 \% \\
\hline 1979 & 66.30 \% \\
\hline 1983 & 67.00 \% \\
\hline 1987 & 75.80 \% \\
\hline
\end{tabular}
\][/tex]
Given this data:
1. 1967: 18.26%
2. 1971: 25.99%
3. 1975: 80.81%
4. 1979: 66.30%
5. 1983: 67.00%
6. 1987: 75.80%
The question asks what conclusion can be drawn about the oil industry in Nigeria. Let's analyze each statement:
1. "Nigeria was generating less revenue from oil in 1987 compared to previous years."
- This is false. The percentage in 1987 was 75.80%, higher than in 1983 (67.00%) and 1979 (66.30%) but lower than in 1975.
2. "Nigeria was generating greater revenue from oil in 1990 compared to previous years."
- This statement cannot be determined from the data given as there is no information about the percentage for the year 1990.
3. "Nigeria's oil revenue peaked during 1975."
- This is true. The highest percentage recorded is 80.81% in 1975, which indicates that the peak was in 1975.
4. "Nigeria's oil revenue decreased during 1987."
- This is false. The percentage in 1987 was higher than both in 1983 and 1979.
Therefore, the valid conclusion based on the chart is:
Nigeria's oil revenue peaked during 1975.
