Which year does these years similar to, starting from 2007 (1 year gap)

2007 was similar to 2008 than 2006

2008 was similar to 2007 than 2009

2009 was similar to both 2008 and 2010

2010 was similar to both 2009 and 2011

2011 was similar to both 2010 and 2012

2012 was similar to 2011 than 2013

2013 was similar to 2014 than 2012

2014 was similar to 2013 than 2015

2015 was similar to 2014 than 2016

2016 was similar to 2017 than 2015

2017 was similar to 2018 than 2016

2018 was similar to both 2017 and 2019

2019 was similar to 2018 than 2020

2020 was similar to 2021 than 2019

2021 was similar to 2020 than 2022

2022 was similar to 2023 than 2021

2023 was similar to both 2022 and 2024

2024 was similar to 2025 than 2023

2025 was similar to both 2024 and 2026