Year	Percent
1950	11.50085
1955	10.25195
1960	7.04526
1965	6.51306
1970	10.68343
1975	11.76789
1980	14.18298
1985	11.75241
1990	9.82632
1995	9.85046
2000	11.2685
2005	12.26101
2010	11.59044
2015	10.73091
2020	9.69778
2025	8.96882
2030	8.34924
2035	8.06832
2040	7.63804
2045	7.11533
2050	6.62259
2055	6.22509
2060	5.92631
2065	5.70053
2070	5.50858
2075	5.3439
2080	5.20755
2085	5.09941
2090	5.02923
2095	4.99011
2100	4.95484