Year	Percent
1950	10.6728
1955	8.15943
1960	7.40229
1965	10.28654
1970	11.54002
1975	10.37487
1980	8.30842
1985	8.34206
1990	8.61874
1995	9.40063
2000	9.96737
2005	7.7939
2010	5.99121
2015	4.9482
2020	5.34357
2025	5.57378
2030	5.08658
2035	4.62604
2040	4.33037
2045	4.16509
2050	4.23162
2055	4.39998
2060	4.48035
2065	4.43464
2070	4.37197
2075	4.39428
2080	4.52078
2085	4.68884
2090	4.80375
2095	4.80987
2100	4.75296