Year	Percent
1950	9.29446
1955	9.73068
1960	8.40855
1965	8.01313
1970	8.19148
1975	7.97067
1980	7.34704
1985	6.36538
1990	5.37757
1995	5.9134
2000	6.68566
2005	6.52017
2010	6.07975
2015	6.05605
2020	5.29355
2025	5.42935
2030	5.71287
2035	5.83855
2040	5.75516
2045	5.58577
2050	5.43059
2055	5.39342
2060	5.47727
2065	5.54695
2070	5.51957
2075	5.40762
2080	5.28378
2085	5.21629
2090	5.21093
2095	5.22267
2100	5.2087