From the text, please extract and list Nokia's market capitalization timeline.

Nokia is a public limited liability company and is the oldest company listed under the same name on the Helsinki Stock Exchange, beginning in 1915.[234] Nokia has had a secondary listing on the New York Stock Exchange since 1994.[7][234] Nokia shares were delisted from the London Stock Exchange in 2003, the Paris Stock Exchange in 2004, the Stockholm Stock Exchange in 2007 and the Frankfurt Stock Exchange in 2012.[235] Due to the acquisition of Alcatel-Lucent in 2015, Nokia listed its shares again on the Paris Stock Exchange and was included in the CAC 40 index on 6 January 2016[236] but later removed on 18 September 2017.[237]

In 2007, Nokia had a market capitalization of €110 billion; by 17 July 2012 this had fallen to €6.28 billion, and by 23 February 2015, it increased to €26.07 billion. Nokia market cap at 2020 was 21.76 billion.

Here is a timeline of Nokia's market capitalization:
1. 2007 - 110 Billion Euros
2. 2012 - 6.28 Billion Euros
3. 2015 - 26.07 Billion Euros
4. 2020 - 21.76 Billion Euros