Year	Percent
1950	11.85355
1955	12.02755
1960	12.19753
1965	10.91945
1970	11.17029
1975	11.59267
1980	12.11094
1985	12.50784
1990	12.60347
1995	13.02
2000	13.90707
2005	12.61965
2010	10.9952
2015	9.64672
2020	9.06643
2025	8.262
2030	7.87745
2035	7.26855
2040	6.62091
2045	6.06897
2050	5.69062
2055	5.46592
2060	5.31857
2065	5.17249
2070	5.0129
2075	4.87107
2080	4.78771
2085	4.76986
2090	4.78549
2095	4.7966
2100	4.78258