The line graph illustrate the average cost of solar panels and the proportion of the population owning them from 1995 to 2005. Overall, what stands out from the graph is that the average cost of solar panels saw a significant decline over the decade, while despite the fluctuations, the proportion of population increased markedly over the years.
Looking at the details, solar panels cost about $1500 in 1995. Then, this figure rose to $1600. However, it experienced a sharp decrease to around $500 by 1997. After this, the figure remained stable despite some fluctuations and it cost $400 and $600 from 1998 to 2005
In contrast, the using of solar panels among the population started with 6%. Then, it climb sharply to 21% in 1996. Then, the percentage of population saw a significant rise until 2000, with 30%. After some instability, the figure continued to grow and reached about 25% until 2005