Since the end of the Cultural Revolution, China has made significant investments in scientific research and is quickly catching up with the US in R&D spending. In 2017, China spent $279 billion on scientific research and development. According to the OECD, China spent 2.11% of its GDP on research and development (R&D) in 2016. Science and technology are seen as vital for achieving China's economic and political goals, and are held as a source of national pride to a degree sometimes described as "techno-nationalism". According to the World Intellectual Property Indicators, China received 1.54 million patent applications in 2018, representing nearly half of patent applications worldwide, more than double the US. In 2019, China was No. 1 in international patents application. China was ranked 12th, 3rd in Asia & Oceania region and 2nd for countries with a population of over 100 million in the Global Innovation Index in 2021, it has increased its ranking considerably since 2013, where it was ranked 35th. China ranks first globally in the important indicators, including patents, utility models, trademarks, industrial designs, and creative goods exports and it also has 2 (Shenzhen-Hong Kong-Guangzhou and Beijing in the 2nd and 3rd spots respectively) of the global top 5 science and technology clusters, which is more than any other country. Chinese tech companies Huawei and ZTE were the top 2 filers of international patents in 2017. Chinese-born academicians have won the Nobel Prize in Physics four times, the Nobel Prize in Chemistry, Nobel Prize in Physiology or Medicine and Fields Medal once respectively, though most of them conducted their prize-winning research in western nations.