Figure 4
The line graph is titled “Denmark”. The horizontal axis is labeled “Year” and ranges from 1,992 to 2,019 in increments of 1 year. The vertical axis is labeled “Carbon Tax (in U S dollar)” and includes the following markings from top to bottom: “30.83”, “28.84”, “28.25”, “27.38”, “26.39”, “24.47”, “17.48”, “16.3”, “15.72”, “15.58”, “14.67”, “14.55”, “12.85”, and “11.74”. The data is as follows: The line begins in 1,992 at the 15.58 mark. It shows high volatility throughout the 1,990s and early 2,000s, reaching the absolute lowest point of 11.74 in 2,002. After 2,006, the trend climbs sharply to reach the absolute highest peak value of 30.83 in 2,008. The trend remains elevated with significant fluctuations, including notable local peaks of 28.84 in 2,011 and 30.83 in 2,014. After a drop in 2,015, the tax began to rise again toward the end of the decade. The line terminates in 2,019 at the 26.39 mark. Note: All the numerical data values are approximated.Carbon tax in Denmark