This is a question from Sustainable Energy by Richard Dunlap (2nd edition): If world energy use increases linearly, use Figure 2.13 to estimate the annual percentage increase for OECD and non-OECD countries from 1990 to 2035 relative to the use in 1990. Here is some information about this figure: 1990 OECD 217 QBtu total 355 QBtu non-OECD 138 QBtu   2035 OECD 293 QBtu total 774 QBtu no-OECD 481 QBtu I also attached the figure: Do I find the overall percent increase and divide it by (2035 - 1990 ) or 45?

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This is a question from Sustainable Energy by Richard Dunlap (2nd edition):

If world energy use increases linearly, use Figure 2.13 to estimate the annual percentage increase for OECD and non-OECD countries from 1990 to 2035 relative to the use in 1990. Here is some information about this figure:

1990

OECD 217

QBtu total 355 QBtu

non-OECD 138 QBtu

 

2035

OECD 293

QBtu total 774 QBtu

no-OECD 481 QBtu

I also attached the figure:

Do I find the overall percent increase and divide it by (2035 - 1990 ) or 45?

**Figure 2.13: Previous and Predicted Total World Energy Use up to the Year 2035**

This bar graph illustrates the historical and projected total world energy consumption from 1990 to 2035, measured in quadrillion British thermal units (QBtus). The data is categorized into energy use by OECD (Organisation for Economic Co-operation and Development) and Non-OECD countries.

- **1990:** Total consumption is 354 QBtu, with a significant portion from Non-OECD countries.
- **2000:** Energy use rises to 406 QBtu, with a noticeable increment in Non-OECD consumption.
- **2008:** The total reaches 505 QBtu, showing further growth in both regions, but faster in Non-OECD countries.
- **2015:** Consumption increases to 573 QBtu, continuing the trend of higher Non-OECD energy use.
- **2020:** Projected usage is 619 QBtu, with Non-OECD countries leading the growth.
- **2025:** Energy consumption is expected to be 671 QBtu, sustaining the previous pattern.
- **2030:** The projection is 721 QBtu, with Non-OECD nations continuing to dominate the increase in energy use.
- **2035:** Total global energy consumption is forecasted to be 770 QBtu.

This graph highlights the rising energy demands globally, particularly in Non-OECD countries, implying significant implications for global energy policy and sustainability efforts.

Source: International Energy Outlook 2011, DOE/EIA.
Transcribed Image Text:**Figure 2.13: Previous and Predicted Total World Energy Use up to the Year 2035** This bar graph illustrates the historical and projected total world energy consumption from 1990 to 2035, measured in quadrillion British thermal units (QBtus). The data is categorized into energy use by OECD (Organisation for Economic Co-operation and Development) and Non-OECD countries. - **1990:** Total consumption is 354 QBtu, with a significant portion from Non-OECD countries. - **2000:** Energy use rises to 406 QBtu, with a noticeable increment in Non-OECD consumption. - **2008:** The total reaches 505 QBtu, showing further growth in both regions, but faster in Non-OECD countries. - **2015:** Consumption increases to 573 QBtu, continuing the trend of higher Non-OECD energy use. - **2020:** Projected usage is 619 QBtu, with Non-OECD countries leading the growth. - **2025:** Energy consumption is expected to be 671 QBtu, sustaining the previous pattern. - **2030:** The projection is 721 QBtu, with Non-OECD nations continuing to dominate the increase in energy use. - **2035:** Total global energy consumption is forecasted to be 770 QBtu. This graph highlights the rising energy demands globally, particularly in Non-OECD countries, implying significant implications for global energy policy and sustainability efforts. Source: International Energy Outlook 2011, DOE/EIA.
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