I would not use 5 years performance for financial planning.
Pictet has a study with Swiss equities giving 7.65% nominal CAGR since 1925: The long-term performance of Swiss assets is back on course | Expert commentary | Pictet
Inflation adjusted, that’s 5.72% real CAGR.
The longer term returns of global stocks in CHF should be able to be calculated from the Deutsche Bank Research Institute’s “Long-Term Asset Return Study - The Ultimate Guide to Long-Term Investing” linked by @Dr.PI here: [COFFEE] History and histories: historical data, charts, long-term trends in investment - #237 by Dr.PI