Given the task definition and input, reply with output. In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.

Article: April 21st in 2006 was the 80th birthday of Queen Elizabeth II. She is one of the most famous women in the world. Here are some interesting stories about the Queen. Queen Elizabeth IIis the fortieth monarch since 1066. She has been the queen of Great Britain for 54 years. During her 54-year reign , she has made over 250 official visit to 129 different countries, including China in 1986. She has also hosted more than 90 formal dinners for those important people from foreign leaders. When she visits foreign countries or hosts formal dinners, the Queen often receives presents from foreign leaders. Some unusual presents include animals like jaguars and sloths from Brazil, and black beavers from Canada. The Queen is a great animal lover and she is known for her love of dogs. So far, the Queen has had more than 30 dogs. She is also really fond of horses and good at feeding horses. Her horses have won major races several times. The Queen usually sends a telegram of congratulations to her people who are 100 years old on their hundredth birthday. Perhaps she will send herself on in twenty years. It's not impossible, since all her family members have enjoyed a long life. The Queen's mother died in 2002 at the age of 101.
Answer: 81
We can learn from the passage that Queen Elizabeth II is _ years old this year.