- In 1980, there were 15 million dog owners and 7 million cat owners.
- By 1985, dog owners increased to 17 million, while cat owners rose slightly to 8 million.
- In 1990, dog owners decreased to 12 million, and cat owners remained at 7 million.
- In 1995, both dog and cat owners reached 21 million, showing equal numbers for the first time in this period.
- By 2000, dog owners surged to 45 million, while cat owners stayed at 21 million.
- In 2005, dog owners declined to 42 million, and cat owners increased to 28 million.
- By 2010, dog owners fell further to 41 million, and cat owners rose to 32 million.
- In 2015, dog owners dropped to 39 million, while cat owners climbed to 47 million, surpassing dog owners for the first time.
Parent Tip: Review the logic above to help your child master the concept of line graph writing.